Filter cross-reference lookup
Type the number on the end cap or the box. This page lists every cartridge in the dataset that carries it, with the OEM, Unicel, Pleatco, and Filbur numbers already on that row, plus diameter, length, and fittings. Each name links to that filter page. The homepage search opens one part-number page and leaves this step out. The size lookup is the other tool, for when the number is gone. This one does not add a number the catalogs do not already have.
Retailer buttons stay on the filter page. A listing this site has opened is labeled there, and a search is labeled as a search. This page does not print a price.
The table stays empty until a number matches. Try C-8326, 6540-476, or FC-0161.
| Match | Filter page | OEM | Unicel | Pleatco | Filbur | Size | Top / bottom |
|---|---|---|---|---|---|---|---|
| Hot Spring 4CH-35 cartridge (OEM 31382) | 31382 (formerly 31116) | 4CH-35 | PTL35-4 (as printed in the Filbur catalog Hot Springs section (printed p.38); not found in the Pleatco 2023 Unicel cross reference) | FC-0161 | 4-5/8" (117 mm) × 16" (406 mm), 35 sq ft | molded cone handle / 1-1/2” male thread/MPT | |
| Hot Spring 5CH-37 cartridge (OEM 303279) | 303279 | 5CH-37 | PFF42TC-P4 | FC-2402 (Pleatco Filbur-to-Pleatco cross reference, PDF p.48 (FC-2402 = PFF42TC-P4); Leisure Time Inc. 5CH-37 page) | 5-5/16" (135 mm) × 9" (229 mm), 38 sq ft | bar handle / 1-1/2” male thread/MPT | |
| Hot Spring C-4326 cartridge (OEM 33521) | 33521 | C-4326 | PRB25-IN | FC-2375 | 4-15/16" (125 mm) × 13-5/16" (338 mm), 25 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Hot Spot C-4326 cartridge (OEM 33521) | 33521 | C-4326 | PRB25-IN | FC-2375 | 4-15/16" (125 mm) × 13-5/16" (338 mm), 25 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Hot Spring C-5431 cartridge (OEM 31233) | 31233 | C-5431 | PKW30V (as printed in the Filbur catalog Hot Springs section (printed p.38); not found in the Pleatco 2023 Unicel cross reference) | FC-3910 | 5-1/8" (130 mm) × 10-1/4" (260 mm), 30 sq ft | 1-15/16" / open / 1-15/16" / open | |
| Hot Spring C-6330 cartridge (OEM 31489) | 31489, 71825, 71826 | C-6330 | PWK30 | not listed | 6" (152 mm) × 10-1/2" (267 mm), 30 sq ft | 1-15/16" / open / 1-15/16" / open | |
| Hot Spring C-6430 cartridge (OEM 31489) | 31489, 71825, 71826 | C-6430 | PWK30-4 | FC-3915 | 6" (152 mm) × 10-1/2" (267 mm), 30 sq ft | 1-15/16" / open / 1-15/16" / open | |
| Hot Spot C-6430 cartridge (OEM 31489) | 31489, 71825, 71826 | C-6430 | PWK30-4 | FC-3915 | 6" (152 mm) × 10-1/2" (267 mm), 30 sq ft | 1-15/16" / open / 1-15/16" / open | |
| Solana C-6430 cartridge (OEM 31489) | 31489, 71825, 71826 | C-6430 | PWK30-4 | FC-3915 | 6" (152 mm) × 10-1/2" (267 mm), 30 sq ft | 1-15/16" / open / 1-15/16" / open | |
| Caldera C-6430 cartridge (OEM 31489) | 31489, 71825, 71826 | C-6430 | PWK30-4 | FC-3915 | 6" (152 mm) × 10-1/2" (267 mm), 30 sq ft | 1-15/16" / open / 1-15/16" / open | |
| Hot Spring C-6350 cartridge (OEM 1642301-1) | 1642301-1, 78161 | C-6350 | not listed | not listed | 6" (152 mm) × 14" (356 mm), 50 sq ft | 1-15/16" / open / 1-15/16" / open | |
| Hot Spring C-6355 cartridge (OEM 1642301-1) | 1642301-1, 78161 | C-6355 | PWK35B (matched by OEM 1642301-1 in the Pleatco 2023 spec table (PDF p.33: 6-3/8" x 14", 1-15/16" open both ends, 35 sq ft, Watkins Hot Spring Spas); not in the Pleatco Unicel cross reference) | not listed | 6" (152 mm) × 14" (356 mm), 75 sq ft | 1-15/16" / open / 1-15/16" / open | |
| Hot Spring C-6433 cartridge (OEM 31250) | 31250 | C-6433 | PWK35 (as printed in the Filbur catalog Hot Springs section (printed p.38); not found in the Pleatco 2023 Unicel cross reference) | FC-3920 | 6" (152 mm) × 9" (229 mm), 33 sq ft | 1-15/16" / open / 1-15/16" / open | |
| Hot Spring C-6600 cartridge (OEM 31115) | 31115 | C-6600 | PWK25-4, PWK40 (as printed in the Filbur catalog Hot Springs section (printed p.38); not found in the Pleatco 2023 Unicel cross reference) | FC-3930 | 6-3/8" (162 mm) × 11-7/8" (302 mm), 45 sq ft | 3" / open / 3" / open | |
| Hot Spring C-8465 cartridge (OEM 31114) | 31114, 71827, 71828 | C-8465 | PWK65 | FC-3960 | 8-1/2" (216 mm) × 10-1/2" (267 mm), 65 sq ft | 3" / open / 3" / open | |
| Hot Spot C-8465 cartridge (OEM 31114) | 31114, 71827, 71828 | C-8465 | PWK65 | FC-3960 | 8-1/2" (216 mm) × 10-1/2" (267 mm), 65 sq ft | 3" / open / 3" / open | |
| Hot Spot C-7350 cartridge (OEM 1019401) | 1019401, 73532 | C-7350 | PCD50N | FC-3963 | 7" (178 mm) × 10-3/4" (273 mm), 50 sq ft | semi-circular handle / 2-11/16" / open | |
| Hot Spot C-7375 cartridge (OEM 1019301) | 1019301, 73531 | C-7375 | PCD75N | FC-3964 | 7" (178 mm) × 14-3/4" (375 mm), 75 sq ft | semi-circular handle / 2-11/16" / open | |
| Caldera C-4335 cartridge (OEM 74148) | 74148 | C-4335 | PRB35-IN | FC-2385 | 4-15/16" (125 mm) × 9-1/4" (235 mm), 35 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Caldera C-4950 cartridge (OEM 302005) | 302005, 73533 | C-4950 | PRB50-IN | FC-2390 | 4-15/16" (125 mm) × 13-5/16" (338 mm), 50 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Caldera C-7350 cartridge (OEM 1019401) | 1019401, 73532 | C-7350 | PCD50N | FC-3963 | 7" (178 mm) × 10-3/4" (273 mm), 50 sq ft | semi-circular handle / 2-11/16" / open | |
| Caldera C-7375 cartridge (OEM 1019301) | 1019301, 73531 | C-7375 | PCD75N | FC-3964 | 7" (178 mm) × 14-3/4" (375 mm), 75 sq ft | semi-circular handle / 2-11/16" / open | |
| Caldera C-7451 cartridge (OEM 033016) | 033016 | C-7451 | PCD50 | FC-3084 | 7" (178 mm) × 10-3/4" (273 mm), 50 sq ft | semi-circular handle / 2” male slip fitting | |
| Caldera C-7479 cartridge (OEM 033017) | 033017 | C-7479 | PCD75 | FC-3085 | 7" (178 mm) × 14-3/4" (375 mm), 75 sq ft | semi-circular handle / 2” male slip fitting | |
| Caldera C-8300 cartridge (OEM 74817) | 74817 | C-8300 | not listed | FC-3966 (Leisure Time Inc. C-8300 page; Filbur catalog Caldera section, printed p.30 (PDF p.16), lists FC-3966 at 8" x 16-1/2", 100 sq ft with no OEM number) | 8" (203 mm) × 16-1/2" (419 mm), 100 sq ft | 3-1/8" / open w/ molded gasket / 3-1/8" / open w/ molded gasket | |
| Caldera C-8399 cartridge (OEM 1039607) | 1039607, 73722 | C-8399 | PCD100W | FC-3965 | 8" (203 mm) × 16-1/2" (419 mm), 100 sq ft | semi-circular handle / 3-5/8" / open w/ lip seal | |
| Caldera C-8465 cartridge (OEM 76136) | 76136 | C-8465 | PWK65 | FC-3960 | 8-1/2" (216 mm) × 10-1/2" (267 mm), 65 sq ft | 3" / open / 3" / open | |
| Jacuzzi C-5625 cartridge (OEM 42-2891-08-R) | 42-2891-08-R (formerly 42-2763-03) | C-5625 | PJ25-IN-4 | FC-1425 | 5" (127 mm) × 13-5/16" (338 mm), 25 sq ft | 2-3/8" / open / 2-3/8" / open | |
| Jacuzzi C-5635 cartridge (OEM 42-3533-00-R) | 42-3533-00-R | C-5635 | PJ37-IN-4 (as printed in the Filbur catalog Jacuzzi Whirlpool Spas section (printed p.39); not found in the Pleatco 2023 Unicel cross reference) | FC-1437 | 5" (127 mm) × 13-5/16" (338 mm), 37 sq ft | 2-3/8" / open / 2-3/8" / open | |
| Jacuzzi C-7304 cartridge (OEM 42-3724-09) | 42-3724-09 | C-7304 | PJB40 (as printed in the Filbur catalog Jacuzzi Whirlpool Spas section (printed p.39); not found in the Pleatco 2023 Unicel cross reference) | FC-1450 | 7" (178 mm) × 13-11/16" (348 mm), 40 sq ft | 3" / open w/ step / 3" / open w/ step | |
| Jacuzzi C-7306 cartridge (OEM 42-3725-08) | 42-3725-08 | C-7306 | PJB60 | FC-1455 | 7" (178 mm) × 17-11/16" (449 mm), 60 sq ft | 3" / open w/ step / 3" / open w/ step | |
| Jacuzzi 4CH-934 cartridge (OEM 2540-387) | 2540-387 | 4CH-934 | not listed | FC-2761 | 4-5/8" (117 mm) × 12-1/2" (318 mm), 35 sq ft | molded cone handle / 2" SAE thread | |
| Jacuzzi 5CH-402 cartridge (OEM 6540-723) | 6540-723 | 5CH-402 | PJW40SC-F2M | FC-2811 | 5-3/16" (132 mm) × 10-3/4" (273 mm), 50 sq ft | bar handle / 2” male thread/MPT | |
| Jacuzzi 6CH-945 cartridge (OEM 6540-498) | 6540-498 | 6CH-945 | PJP45-F2S (per Leisure Time Inc. (see source list); also listed as a current part in the Pleatco 2023 catalog) | FC-2717 | 6" (152 mm) × 13-1/2" (343 mm), 45 sq ft | semi-circular handle / 2" SAE thread | |
| Jacuzzi 6CH-959 cartridge (OEM 2000-286) | 2000-286, 20086-001, 2540-383 | 6CH-959 | not listed | FC-2716 | 6" (152 mm) × 17-1/2" (445 mm), 60 sq ft | semi-circular handle / 2" SAE thread | |
| Jacuzzi 6CH-960 cartridge (OEM 6540-164) | 6540-164, 6540-476, 6541-383 | 6CH-960 | PJW60TL-F2S | FC-2800 | 6-3/4" (171 mm) × 15-1/2" (394 mm), 75 sq ft | semi-circular handle / 2" SAE thread | |
| Jacuzzi 6CH-961 cartridge (OEM 6540-164) | 6540-164, 6540-476, 6541-383 | 6CH-961 | PJW60TL-OT-F2S | FC-2715 | 6-3/4" (171 mm) × 15-1/2" (394 mm), 75 sq ft | open w/ slots / 2" SAE thread | |
| Jacuzzi C-4326 cartridge (OEM 373045) | 373045 | C-4326 | PRB25-IN | FC-2375 | 4-15/16" (125 mm) × 13-5/16" (338 mm), 25 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Jacuzzi C-4950 cartridge (OEM 373045) | 373045 | C-4950 | PRB50-IN | FC-2390 | 4-15/16" (125 mm) × 13-5/16" (338 mm), 50 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Sundance 4CH-30 cartridge (OEM 6540-484) | 6540-484 | 4CH-30 | PTL25P-4 (as printed in the Filbur catalog Sundance section (printed p.51); not found in the Pleatco 2023 Unicel cross reference) | FC-0141 | 4-5/8" (117 mm) × 11-7/8" (302 mm), 25 sq ft | molded cone handle / 1-1/2” male thread/MPT | |
| Sundance 4CH-35 cartridge (OEM 6540-486) | 6540-486 | 4CH-35 | PTL35-4 (as printed in the Filbur catalog Sundance section (printed p.51); not found in the Pleatco 2023 Unicel cross reference) | FC-0161 | 4-5/8" (117 mm) × 16" (406 mm), 40 sq ft | molded cone handle / 1-1/2” male thread/MPT | |
| Sundance 5CH-402 cartridge (OEM 6540-723) | 6540-723 | 5CH-402 | PJW40SC-F2M | FC-2811 | 5-3/16" (132 mm) × 10-3/4" (273 mm), 50 sq ft | bar handle / 2” male thread/MPT | |
| Sundance 6CH-47 cartridge (OEM 373043) | 373043 | 6CH-47 | PTL47W-P4 | FC-0315 | 6" (152 mm) × 9-1/8" (232 mm), 45 sq ft | semi-circular handle / 1-1/2” male thread/MPT | |
| Sundance 7CH-90 cartridge (OEM 6540-487) | 6540-487 | 7CH-90 | PSD90P (as printed in the Filbur catalog Sundance section (printed p.52); not found in the Pleatco 2023 Unicel cross reference) | FC-2770 | 7" (178 mm) × 19" (483 mm), 90 sq ft | 2-1/2" / open w/ beveled edge / 1-1/2” male thread/MPT | |
| Sundance 8CH-102 cartridge (OEM 2540-381) | 2540-381 | 8CH-102 | PSD95-F2L | FC-2781 | 8" (203 mm) × 15-1/2" (394 mm), 95 sq ft | semi-circular handle / 2” male thread/MPT | |
| Sundance C-4305 cartridge (OEM 6540-497) | 6540-497 | C-4305 | PMT50 | FC-1630 | 4-15/16" (125 mm) × 14-7/8" (378 mm), 50 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Sundance C-4335 cartridge (OEM 6000-136) | 6000-136 | C-4335 | PRB35-IN | FC-2385 | 4-15/16" (125 mm) × 9-1/4" (235 mm), 35 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Sundance C-4440 cartridge (OEM 6540-495) | 6540-495 | C-4440 | PSD40-4 (as printed in the Filbur catalog Sundance section (printed p.51); not found in the Pleatco 2023 Unicel cross reference) | FC-2710 | 4-5/8" (117 mm) × 16-3/4" (425 mm), 40 sq ft | castle / 2-1/16" / open | |
| Sundance C-4950 cartridge (OEM 6540-471) | 6540-471 | C-4950 | PRB50-IN | FC-2390 | 4-15/16" (125 mm) × 13-5/16" (338 mm), 50 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Sundance C-7370 cartridge (OEM 6540-483) | 6540-483 | C-7370 | PSD75 | FC-2760 | 7-1/2" (191 mm) × 17-3/4" (451 mm), 75 sq ft | castle / 2-1/2" / open w/ beveled edge | |
| Sundance C-7465 cartridge (OEM 6540-480) | 6540-480 | C-7465 | PSD65 (as printed in the Filbur catalog Sundance section (printed p.52); not found in the Pleatco 2023 Unicel cross reference) | FC-2730 | 7-1/2" (191 mm) × 14-3/4" (375 mm), 65 sq ft | castle / 2-1/16" / open | |
| Sundance C-7466 cartridge (OEM 6540-481) | 6540-481 | C-7466 | PSD65-2 | FC-2740 | 7-1/2" (191 mm) × 14-3/4" (375 mm), 65 sq ft | castle / 2-5/8" / open | |
| Sundance C-8325 cartridge (OEM 6540-490) | 6540-490 | C-8325 | PSD125U | FC-2790 | 8-7/16" (214 mm) × 18" (457 mm), 125 sq ft | closed w/ 3-step edge / 2-1/2" / open w/ beveled edge | |
| Sundance C-8326 cartridge (OEM 6540-488) | 6540-488 | C-8326 | PSD125-2000 | FC-2780 | 8-7/16" (214 mm) × 19" (483 mm), 125 sq ft | 1-1/2" male slip fitting / 2-1/2" / open w/ beveled edge | |
| Sundance C-8327 cartridge (OEM 6540-488) | 6540-488, 6540-507 | C-8327 | PSD125-2000 (per Leisure Time Inc. (see source list); Pleatco 2023 spec table PDF p.35 lists PSD125-2000 for OEM 6540-488) | FC-2780 (Leisure Time Inc. C-8327 page; Filbur catalog Sundance section, printed p.52 (PDF p.27), lists FC-2780 for OEM 6540-488) | 8-7/16" (214 mm) × 19" (483 mm), 125 sq ft | 1-1/2" male slip fitting / 2-1/2" / open w/ beveled edge | |
| Sundance C-8380 cartridge (OEM 6540-501) | 6540-501 | C-8380 | PSD85-2002 | FC-2810 | 8-7/16" (214 mm) × 14" (356 mm), 80 sq ft | closed w/ 2" SAE thread / 2-1/2" / open w/ beveled edge | |
| Bullfrog 6CH-940 cartridge | not listed | 6CH-940 | PWW50P3 | FC-0359 | 6" (152 mm) × 8-1/4" (210 mm), 50 sq ft | semi-circular handle / injection molded 1-1/2" SAE thread | |
| Bullfrog 8CH-950 cartridge (OEM 10-1035) | 10-1035 | 8CH-950 | PBF35 | FC-0536 | 8" (203 mm) × 6" (152 mm), 50 sq ft | semi-circular handle / 2" SAE thread | |
| Bullfrog 8CH-951 cartridge (OEM 10-2870) | 10-2870 | 8CH-951 | PBF36 | not listed | 8" (203 mm) × 5-3/4" (146 mm), 50 sq ft | semi-circular handle / 2" SAE thread | |
| Bullfrog C-4335 cartridge | not listed | C-4335 | PRB35-IN | FC-2385 | 4-15/16" (125 mm) × 9-1/4" (235 mm), 35 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Bullfrog C-4950 cartridge | not listed | C-4950 | PRB50-IN | FC-2390 | 4-15/16" (125 mm) × 13-5/16" (338 mm), 50 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Cal Spas 4CH-19 cartridge (OEM FIL11100305) | FIL11100305 | 4CH-19 | PSG13.5P4 | FC-0122 | 4-5/8" (117 mm) × 4-5/8" (117 mm), 13 sq ft | molded cone handle / 1-1/2” male thread/MPT | |
| Cal Spas 4CH-252 cartridge (OEM FIL11100303) | FIL11100303 | 4CH-252 | PMA20-F2M | not listed | 4-5/8" (117 mm) × 8" (203 mm), 25 sq ft | molded cone handle / 2” male thread/MPT | |
| Cal Spas 5CH-502 cartridge (OEM FIL11100202) | FIL11100202, FIL11100200, FIL11100201 | 5CH-502 | PPM50SC-F2M | FC-0195 | 5-3/16" (132 mm) × 12-1/2" (318 mm), 50 sq ft | bar handle / 2” male thread/MPT | |
| Cal Spas 5CH-752 cartridge | not listed | 5CH-752 | PCAL60-F2M | FC-0202 (Pleatco Filbur-to-Pleatco cross reference, PDF p.48 (FC-0202 = PCAL60-F2M, the same Pleatco number Pleatco p.47 gives for 5CH-752); Leisure Time Inc. 5CH-752 page) | 5-3/16" (132 mm) × 16-1/8" (410 mm), 75 sq ft | bar handle / 2” male thread/MPT | |
| Cal Spas 6CH-975 cartridge (OEM FIL11700016) (unverified) | FIL11700016 | 6CH-975 | not listed | not listed | 6-3/4" (171 mm) × 15-1/2" (394 mm), 75 sq ft | semi-circular handle / 2" SAE thread | |
| Cal Spas C-4305 cartridge | not listed | C-4305 | PMT50 | FC-1630 | 4-15/16" (125 mm) × 14-7/8" (378 mm), 50 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Cal Spas C-4950 cartridge | not listed | C-4950 | PRB50-IN | FC-2390 | 4-15/16" (125 mm) × 13-5/16" (338 mm), 50 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Cal Spas C-4995 cartridge | not listed | C-4995 | PCAL100 | FC-2940 | 4-15/16" (125 mm) × 23-5/8" (600 mm), 100 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Cal Spas C-5374 cartridge | not listed | C-5374 | PLBS75 | FC-2971 | 5-5/16" (135 mm) × 14-13/16" (376 mm), 75 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Master Spas 4CH-20 cartridge | not listed | 4CH-20 | PHC25 (as printed in the Filbur catalog Master Spas section (printed p.43); not found in the Pleatco 2023 Unicel cross reference) | FC-0125 | 4-5/8" (117 mm) × 6-3/4" (171 mm), 20 sq ft | molded cone handle / 1-1/2” male thread/MPT | |
| Master Spas 4CH-252 cartridge (OEM X268521) | X268521 | 4CH-252 | PMA20-F2M | not listed | 4-5/8" (117 mm) × 8" (203 mm), 25 sq ft | molded cone handle / 2” male thread/MPT | |
| Master Spas 4CH-935 cartridge | not listed | 4CH-935 | PWW35L | not listed | 4-15/16" (125 mm) × 9-1/4" (235 mm), 35 sq ft | v-groove semi-circular handle / 2" female SAE thread | |
| Master Spas 4CH-949 cartridge | not listed | 4CH-949 | PWW50L | FC-0172 | 4-15/16" (125 mm) × 13-1/2" (343 mm), 50 sq ft | v-groove semi-circular handle / 2" female SAE thread | |
| Master Spas 6CH-352 cartridge (OEM PMA-R1) | PMA-R1 | 6CH-352 | PAS40-F2M | FC-0312 | 6" (152 mm) × 8" (203 mm), 35 sq ft | semi-circular handle / 2” male thread/MPT | |
| Master Spas 6CH-402 cartridge (OEM PMA40L-F2M) | PMA40L-F2M | 6CH-402 | PMA40L-F2M (as printed in the Filbur catalog Master Spas (Twilight) section (printed p.43); not found in the Pleatco 2023 Unicel cross reference) | FC-0317 | 6" (152 mm) × 9-1/2" (241 mm), 40 sq ft | semi-circular handle / 2” male thread/MPT | |
| Master Spas 6CH-45 cartridge | not listed | 6CH-45 | PTL45W-P-4 (as printed in the Filbur catalog Master Spas section (printed p.43); not found in the Pleatco 2023 Unicel cross reference) | FC-0330 | 6" (152 mm) × 12-3/8" (314 mm), 45 sq ft | semi-circular handle / 1-1/2” male thread/MPT | |
| Master Spas 6CH-940 cartridge | not listed | 6CH-940 | PWW50P3 | FC-0359 | 6" (152 mm) × 8-1/4" (210 mm), 45 sq ft | semi-circular handle / injection molded 1-1/2" SAE thread | |
| Master Spas 7CH-322 cartridge | not listed | 7CH-322 | PAS35-F2M | FC-0420 | 7" (178 mm) × 8" (203 mm), 32 sq ft | semi-circular handle / 2” male thread/MPT | |
| Master Spas 8CH-66 cartridge | not listed | 8CH-66 | PMA60-F2M | FC-0515 | 8" (203 mm) × 9-1/4" (235 mm), 60 sq ft | semi-circular handle / 2” male thread/MPT | |
| Master Spas C-3310AM cartridge | not listed | C-3310AM | PMA10 | not listed | 3-7/8" (98 mm) × 7" (178 mm), 8 sq ft | 2-3/16" / open / 2-3/16" / open | |
| Master Spas C-7330 cartridge | not listed | C-7330 | PMA30-2002-R | FC-1003 | 7" (178 mm) × 7-1/4" (184 mm), 30 sq ft | 4-1/8" / open / 4-1/8" / open | |
| Master Spas C-8341 cartridge | not listed | C-8341 | PMA45-2004-R | FC-1007 | 8" (203 mm) × 6-3/4" (171 mm), 40 sq ft | 4" / open w/ raised ring / 4" / open w/ raised ring | |
| Bullfrog PBF17 cartridge (OEM 10-00281) | 10-00281 | not listed | PBF17 | not listed | 6-5/8" (168 mm) × 6-1/4" (159 mm), 18 sq ft | 3-3/8" open (coreless) / 4-1/2" open (coreless) | |
| Bullfrog PBF40 cartridge (OEM 10-00282) | 10-00282 | not listed | PBF40 | not listed | 8" (203 mm) × 6-1/4" (159 mm), 30 sq ft | 3-3/8" open (coreless) / 4-1/2" open (coreless) | |
| Marquis Spas 5CH-352 cartridge (OEM 20042) | 20042, 20092, 370-0240, 370-0242, 370-0243, 370-0683, 370-0698 | 5CH-352 | PPM35SC-F2M | FC-0196 | 5-3/16" (132 mm) × 12-1/2" (318 mm), 35 sq ft | bar handle / 2” male thread/MPT | |
| Marquis Spas 5CH-502 cartridge (OEM 20041) | 20041, 20091, 370-0237 | 5CH-502 | PPM50SC-F2M | FC-0195 | 5-3/16" (132 mm) × 12-1/2" (318 mm), 50 sq ft | bar handle / 2” male thread/MPT | |
| Marquis Spas C-5423 cartridge (OEM 20045) | 20045, 370-0215 | C-5423 | PPM35TC (as printed in the Filbur catalog Marquis Spas section (printed p.42); not found in the Pleatco 2023 Unicel cross reference) | FC-3623 | 5-3/16" (132 mm) × 11-15/16" (303 mm), 35 sq ft | closed / 1-5/8" / open | |
| Marquis Spas C-5434 cartridge (OEM 20043) | 20043, 370-0216 | C-5434 | PPM60TC (as printed in the Filbur catalog Marquis Spas section (printed p.43); not found in the Pleatco 2023 Unicel cross reference) | FC-3634 | 5-3/16" (132 mm) × 19-5/8" (498 mm), 60 sq ft | closed / 1-5/8" / open | |
| Marquis Spas C-5346 cartridge (OEM 20044) | 20044, 370-0236 | C-5346 | PPM50TC (as printed in the Filbur catalog Marquis Spas section (printed p.43); not found in the Pleatco 2023 Unicel cross reference) | FC-3638 | 5-3/16" (132 mm) × 14-1/8" (359 mm), 50 sq ft | closed / 1-5/8" / open | |
| Marquis Spas 5CH-512 cartridge (OEM 20690) | 20690, 370-0699 | 5CH-512 | not listed | not listed | 5-3/16" (132 mm) × 16" (406 mm), 50 sq ft | bar handle / 2” male thread/MPT | |
| Marquis Spas 5CH-902AM cartridge (OEM 20499) (unverified) | 20499, 370-0694 | 5CH-902AM | not listed | not listed | 5-3/16" (132 mm) × 30" (762 mm), 90 sq ft | bar handle / 2” male thread/MPT | |
| Marquis Spas C-5626 cartridge | not listed | C-5626 | PPM25-4 (as printed in the Filbur catalog Marquis Spas section (printed p.43); not found in the Pleatco 2023 Unicel cross reference) | FC-3626 | 5-3/16" (132 mm) × 11-7/8" (302 mm), 25 sq ft | 1-1/16" / open / 1-5/8" / open | |
| Marquis Spas C-5637 cartridge | not listed | C-5637 | PPM40-4 (as printed in the Filbur catalog Marquis Spas section (printed p.43); not found in the Pleatco 2023 Unicel cross reference) | FC-3637 | 5-3/16" (132 mm) × 19-5/8" (498 mm), 40 sq ft | 1-1/16" / open / 1-5/8" / open | |
| Dimension One Spas 4CH-30 cartridge (OEM 1561-14) | 1561-14 | 4CH-30 | PTL25P-4 (as printed in the Filbur catalog Dimension One Spas section (printed p.33); not found in the Pleatco 2023 Unicel cross reference) | FC-0141 | 4-5/8" (117 mm) × 11-7/8" (302 mm), 25 sq ft | molded cone handle / 1-1/2” male thread/MPT | |
| Dimension One Spas 4CH-50 cartridge (OEM 1561-05) | 1561-05 | 4CH-50 | PTL50P-4 (as printed in the Filbur catalog Dimension One Spas section (printed p.33); not found in the Pleatco 2023 Unicel cross reference) | FC-0151 | 4-5/8" (117 mm) × 14-3/4" (375 mm), 50 sq ft | molded cone handle / 1-1/2” male thread/MPT | |
| Dimension One Spas 4CH-65 cartridge (OEM 1561-06) | 1561-06, 1561-07 | 4CH-65 | not listed | not listed | 4-5/8" (117 mm) × 19-5/8" (498 mm), 65 sq ft | molded cone handle / 1-1/2” male thread/MPT | |
| Dimension One Spas 4CH-940 cartridge (OEM 1561-13) | 1561-13 | 4CH-940 | PDO-UF40P2 (as printed in the Filbur catalog Dimension One Spas section (printed p.33); not found in the Pleatco 2023 Unicel cross reference) | FC-0177 | 4-5/8" (117 mm) × 15" (381 mm), 40 sq ft | semi-circular handle / 1-1/4" SAE thread | |
| Dimension One Spas 4CH-950 cartridge (OEM 1561-04) | 1561-04 | 4CH-950 | PDO-UF25P2 (as printed in the Filbur catalog Dimension One Spas section (printed p.33); not found in the Pleatco 2023 Unicel cross reference) | FC-0173 | 4-5/8" (117 mm) × 12" (305 mm), 25 sq ft | semi-circular handle / 1-1/4" SAE thread | |
| Dimension One Spas 7CH-552 cartridge (OEM 1561-10) | 1561-10 | 7CH-552 | not listed | not listed | 7" (178 mm) × 10-1/2" (267 mm), 52 sq ft | semi-circular handle / 2” male thread/MPT | |
| Dimension One Spas 7CH-752 cartridge (OEM 1561-02) | 1561-02 | 7CH-752 | PTL75XW-F2M (as printed in the Filbur catalog Dimension One Spas section (printed p.33); not found in the Pleatco 2023 Unicel cross reference) | FC-0470 | 7" (178 mm) × 14-3/4" (375 mm), 75 sq ft | semi-circular handle / 2” male thread/MPT | |
| Dimension One Spas 7CH-975 cartridge (OEM 1561-12) | 1561-12 | 7CH-975 | PDO75P3 (as printed in the Filbur catalog Dimension One Spas section (printed p.33); not found in the Pleatco 2023 Unicel cross reference) | FC-0475 | 7" (178 mm) × 10-1/2" (267 mm), 75 sq ft | semi-circular handle / 1-1/2" SAE thread | |
| Dimension One Spas C-4340 cartridge (OEM 1561-03) | 1561-03 | C-4340 | PMT40 (as printed in the Filbur catalog Dimension One Spas section (printed p.33); not found in the Pleatco 2023 Unicel cross reference) | FC-3081 | 4-15/16" (125 mm) × 11-5/8" (295 mm), 40 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Dimension One Spas C-5404 cartridge (OEM 1561-09) | 1561-09 | C-5404 | PDO40-4 (as printed in the Filbur catalog Dimension One Spas section (printed p.33); not found in the Pleatco 2023 Unicel cross reference) | FC-3097 | 5-1/2" (140 mm) × 17" (432 mm), 40 sq ft | 1-15/16" / open w/ 12 concentric holes / 2-7/8" / open | |
| Dimension One Spas C-7367 cartridge (OEM 1561-00) | 1561-00 | C-7367 | PDO75-2000 | FC-3059 | 7-1/8" (181 mm) × 10-1/2" (267 mm), 75 sq ft | closed w/ Y stand-offs / 2" / open w/ twist lock | |
| Dimension One Spas C-7335 cartridge (OEM 1561-01) | 1561-01 | C-7335 | not listed | FC-3058 | 7-1/8" (181 mm) × 5-7/8" (149 mm), 35 sq ft | closed w/ Y stand-offs / 2" / open w/ twist lock | |
| Nordic Hot Tubs C-4301 cartridge | not listed | C-4301 | PMT27.5 | FC-1610 | 4-15/16" (125 mm) × 14-7/8" (378 mm), 28 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Nordic Hot Tubs C-4326 cartridge | 31CARTRIDGE | C-4326 | PRB25-IN | FC-2375 | 4-15/16" (125 mm) × 13-5/16" (338 mm), 25 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Nordic Hot Tubs 4CH-935 cartridge | CARTRIDGE-T35, 31CARTRIDGE-T35 | 4CH-935 | PWW35L | not listed | 4-15/16" (125 mm) × 9-1/4" (235 mm), 35 sq ft | v-groove semi-circular handle / 2" female SAE thread | |
| Arctic Spas C-4326 cartridge | not listed | C-4326 | PRB25-IN | FC-2375 | 4-15/16" (125 mm) × 13-5/16" (338 mm), 25 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Arctic Spas C-4950 cartridge | PRT-115LOT | C-4950 | PRB50-IN | FC-2390 | 4-15/16" (125 mm) × 13-5/16" (338 mm), 50 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Softub 6CH-25 cartridge (OEM 90-802) | 90-802 | 6CH-25 | PTL20W-SV-P4 | FC-0305 (Filbur lists FC-0305 under Softsider Spas with the same OEM 90-802 (printed p.50, PDF p.26); Filbur does not name Softub) | 6" (152 mm) × 5-1/2" (140 mm), 25 sq ft | semi-circular handle / 1-1/2” male thread/MPT | |
| Softub 4CH-20 cartridge (unverified) | not listed | 4CH-20 | not listed | not listed | 4-5/8" (117 mm) × 6-3/4" (171 mm), 20 sq ft | molded cone handle / 1-1/2” male thread/MPT | |
| Intex C-4317 cartridge (OEM 29001E) (unverified) | 29001E, 29011E, 29001, 11692 | C-4317 | PIN4PAIR (matched by OEM 29001E in the Pleatco 2023 spec table (PDF p.31); the Intex part is not in the Pleatco Unicel cross reference) | not listed | 4-1/4" (108 mm) × 2-15/16" (75 mm), 4 sq ft | 2-1/16" / open / 2-1/16" / open | |
| Bestway Type VI cartridge (Bestway 58323) | 58323, 58323E | not listed | not listed | not listed | 4.2" (107 mm) × 3.1" (79 mm) | not listed | |
| Intex Type S2 cartridge (Intex 29012E) | 29012E, 13435 | not listed | not listed | not listed | 3-3/8" (86 mm) × 5-1/8" (130 mm) | not listed | |
| Beachcomber C-4326 cartridge (SKU 3005845) | 3005845 | C-4326 | PRB25-IN (Unicel-to-Pleatco cross reference, PDF p.47: C-4326 = PRB25-IN. Spec table PDF p.32 prints PRB25-IN at 5" x 13-5/16", 2-1/8" open ends, 3 oz, 25 sq ft, for Rainbow / Waterway / CMP, with no Beachcomber stock number.) | FC-2375 (Beachcomber Spas section, PDF p.15: FC-2375, 4-15/16" x 13-5/16", 2-1/8" open, Rainbow Dynamic 25, 3 oz, PRB25-IN, C-4326, 25 sq ft. Filbur does not print SKU 3005845.) | 4-15/16" (125 mm) × 13-5/16" (338 mm), 25 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Beachcomber C-4950 cartridge (SKU 3005815) | 3005815 | C-4950 | PRB50-IN (Unicel-to-Pleatco cross reference, PDF p.47: C-4950 = PRB50-IN. Spec table PDF p.32 prints PRB50-IN at 5" x 13-5/16", 2-1/8" open ends, 3 oz, 50 sq ft. No Beachcomber stock number.) | FC-2390 (Beachcomber Spas section, PDF p.15: FC-2390, 4-15/16" x 13-5/16", 2-1/8" open, Rainbow Dynamic 50, C-4950, 50 sq ft. Filbur does not print SKU 3005815.) | 4-15/16" (125 mm) × 13-5/16" (338 mm), 50 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Beachcomber C-4401 cartridge (SKU 3005820) | 3005820 | C-4401 | PRB17.5SF-PAIR (Unicel cross-reference PDF p.47: C-4401 = PRB17.5SF-JH-PAIR. Spec table PDF p.31: PRB17.5SF-PAIR is 5" x 4-5/8", 2-1/8" both ends, 35 sq ft; PRB17.5SF-JH-PAIR has a 2-3/16" bottom hole. No Beachcomber stock number.) | FC-2386 (Beachcomber Spas section, PDF p.15: FC-2386, 4-15/16" x 4-5/8", 2-1/8" open, Rainbow DSF 35, 2/set, PRB17.5SF-PAIR/JH, C-4401, 35 sq ft.) | 4-15/16" (125 mm) × 4-5/8" (117 mm), 35 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Beachcomber C-4405 cartridge (SKU 3005825) | 3005825 | C-4405 | PRB25SF-PAIR (Unicel cross-reference PDF p.47: C-4405 = PRB25SF-JH-PAIR. Spec table PDF p.32: PRB25SF-PAIR and PRB25SF-JH-PAIR are both 5" x 6-5/8", 2-1/8" open ends, 3 oz, 50 sq ft. No Beachcomber stock number.) | FC-2387 (Beachcomber Spas section, PDF p.15: FC-2387, 4-15/16" x 6-5/8", 2-1/8" open, Rainbow DSF 50, 2/set, PRB25SF-PAIR/JH, C-4405, 50 sq ft.) | 4-15/16" (125 mm) × 6-5/8" (168 mm), 50 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Strong Spas 4CH-925 cartridge (Antigua / Futura) | not listed | 4CH-925 | PSANT20P3 (Spec table PDF p.31: PSANT20P3, 4-3/4" x 7-1/16", handle, 1-1/2" SAE, 3 oz, 20 sq ft, Futura Spa (Strong Industries). PSANT20P4 is the same size with 1-1/2" MPT. Application index PDF p.27: Strong Antigua.) | FC-0126 (Strong Industries section, PDF p.26 (printed p.51): FC-0126, 4-3/4" x 8", handle, 1-1/2" SAE, Antiqua, Pleatco PSANT20 / PSANT20P3, Unicel cell N/A, 20 sq ft. Size table PDF p.9 crosses FC-0126 to 4CH-925. FC-0208 is the 7-1/16" MPT Futura cartridge.) | 4-5/8" (117 mm) × 7-1/4" (184 mm), 20 sq ft | semi-circular handle / 1-1/2" SAE | |
| Freeflow Spas 4CH-22 cartridge (open top) | not listed | 4CH-22 | PFF25W-P4 (Unicel cross-reference PDF p.47: 4CH-22 = PFF25W-P4. Spec table PDF p.32: PFF25W-P4 is 5" x 6-5/8", open 2-1/8", 1-1/2" MPT, 25 sq ft, Freeflow Lagas. Spec table PDF p.31: PFF25P4 is the 4-5/8" open cartridge for Lagas, CLX, FF-150. Filbur, not Pleatco's cross-reference, ties PFF25P4 to 4CH-22.) | FC-2399 (Dimensional listing PDF p.9: FC-2399, 4-15/16" x 6-5/8", open 2-1/8", 1-1/2" MPT, Freeflow 25, CLX, PFF25P4, 4CH-22, 25 sq ft. Freedom Spas section PDF p.18 (printed p.35): CLX, FF-150. Filbur has no Freeflow heading.) | 4-15/16" (125 mm) × 6-5/8" (168 mm), 25 sq ft | 2-1/8" / open / 1-1/2” male thread/MPT | |
| Freeflow Spas 4CH-23 cartridge (closed top) | not listed | 4CH-23 | PFF25TC-P4 (Unicel cross-reference PDF p.47: 4CH-23 = PFF25TC-P4. Spec table PDF p.31: 4-5/8" x 6-5/8", closed, 1-1/2" MPT, 3 oz, 25 sq ft, Lagas, TLX, RLX, FF-100, Claro. Application index PDF p.27: Lagas TLX, RLX.) | FC-2400 (Dimensional listing PDF p.9: FC-2400, 4-15/16" x 6-5/8", closed, 1-1/2" MPT, Freeflo 25, TLX, PFF25TC-P4, 4CH-23, 25 sq ft. Freedom Spas section PDF p.18 (printed p.35): TLX, RLX, FF-100.) | 4-15/16" (125 mm) × 6-5/8" (168 mm), 25 sq ft | closed / 1-1/2” male thread/MPT | |
| Freeflow Spas 5CH-45 cartridge (Legend) | not listed | 5CH-45 | PFF50P4 (Unicel cross-reference PDF p.47: 5CH-45 = PFF50P4. Spec table PDF p.32: 5-5/16" x 10", open 2-1/8", 1-1/2" MPT, 3 oz, 50 sq ft, Freeflow Spas Legend. Application index PDF p.27: Spa Freeflow Legend 50.) | FC-2401 (Dimensional listing PDF p.10: FC-2401, 5-5/16" x 10", open 2-1/8", 1-1/2" MPT, 45 sq ft, PFF50P, 5CH-45. Freedom Spas section PDF p.18 (printed p.35): Legend, 5-1/4" x 10", 45 sq ft, PFF50P.) | 5-5/16" (135 mm) × 10" (254 mm), 45 sq ft | 2-1/8" / open / 1-1/2” male thread/MPT | |
| Freedom Spas 4CH-30 cartridge | not listed | 4CH-30 | PTL25P-4 (Not in the Pleatco 2023 Unicel cross-reference. Filbur's Pleatco cell prints PTL25P-4. Aladdin prints PTL25P4-4 among the OEM numbers on part 13005.) | FC-0141 (Size table PDF p.9: FC-0141, 4-5/8" x 11-7/8", handle, 1-1/2" MPT, 30 sq ft, PTL25P-4, 4CH-30. Freedom Spas section PDF p.18 (printed p.35): FC-0141 at 30 sq ft, no model names. Sundance section prints 25 sq ft for OEM 6540-484.) | 4-5/8" (117 mm) × 11-7/8" (302 mm), 30 sq ft | molded cone handle / 1-1/2” male thread/MPT | |
| Freedom Spas 6CH-45 cartridge | not listed | 6CH-45 | PTL45W-P-4 (Filbur prints PTL45W-P-4. Aladdin prints PTL45W-P4-4 on part 14506. Not taken from Pleatco's Unicel cross-reference.) | FC-0330 (Size table PDF p.10: FC-0330, 6" x 12-1/4", handle, 1-1/2" MPT, 45 sq ft, PTL45W-P-4, 6CH-45. Freedom Spas section PDF p.18 (printed p.35): same 12-1/4" length, no model names.) | 6" (152 mm) × 12-3/8" (314 mm), 45 sq ft | semi-circular handle / 1-1/2” male thread/MPT | |
| Freedom Spas C-4401 cartridge (Liberty) | not listed | C-4401 | PRB17.5SF-PAIR (Unicel cross-reference PDF p.47: C-4401 = PRB17.5SF-JH-PAIR. Spec table prints PRB17.5SF-PAIR at 5" OD. Same cross as the Beachcomber row.) | FC-2386 (Freedom Spas section PDF p.18 (printed p.35): FC-2386, Rainbow DSF 35, 2/set, PRB17.5SF-PAIR/JH, C-4401, 35 sq ft. Does not print Liberty.) | 4-15/16" (125 mm) × 4-5/8" (117 mm), 35 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Freedom Spas C-4405 cartridge | not listed | C-4405 | PRB25SF-PAIR (Unicel cross-reference PDF p.47: C-4405 = PRB25SF-JH-PAIR. Spec table prints PRB25SF-PAIR at 5" x 6-5/8".) | FC-2387 (Freedom Spas section PDF p.18 (printed p.35): FC-2387, Rainbow DSF 50, 2/set, "Model dated after 1993", C-4405, 50 sq ft.) | 4-15/16" (125 mm) × 6-5/8" (168 mm), 50 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Freedom Spas C-4637 cartridge | not listed | C-4637 | PRB37-IN-4 (PRB37-IN-4 is the Pleatco cell in Filbur's Freedom section. Not confirmed in Pleatco's Unicel cross-reference.) | FC-2380 (Freedom Spas section PDF p.18 (printed p.35): FC-2380, 4-15/16" x 13-5/16", open, Rainbow Dynamic 37, PRB37-IN-4, C-4637, 37 sq ft.) | 4-15/16" (125 mm) × 13-5/16" (338 mm), 37 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Freedom Spas C-4950 cartridge | not listed | C-4950 | PRB50-IN (Unicel cross-reference PDF p.47: C-4950 = PRB50-IN.) | FC-2390 (Freedom Spas section PDF p.18 (printed p.35): FC-2390, Rainbow Dynamic 50, "Model dated after 1993", C-4950, 50 sq ft.) | 4-15/16" (125 mm) × 13-5/16" (338 mm), 50 sq ft | 2-1/8" / open / 2-1/8" / open | |
| PDC Spas C-4326 cartridge (OEM FLT-201TL) | FLT-201TL | C-4326 | PRB25-IN (Unicel cross-reference PDF p.47: C-4326 = PRB25-IN. Spec table PDF p.32: 5" × 13-5/16", 2-1/8" open, 3 oz, 25 sq ft. Deactivated PDC25-AFS points at PRB25-IN; PDC’s 2025 guide does not print PDC25-AFS.) | FC-2375 (Dimensional listing PDF p.9 (printed p.17): FC-2375 = PRB25-IN = C-4326, 4-15/16" × 13-5/16", 25 sq ft. Same page: FC-2370 = PRB25-IN-4 = C-4625. PDC Spas section PDF p.23 (printed p.45) prints FC-2370 as C-4325, not C-4326.) | 4-15/16" (125 mm) × 13-5/16" (338 mm), 25 sq ft | 2-1/8" / open / 2-1/8" / open | |
| PDC Spas C-4405 cartridge (OEM FLT-171-CART) | FLT-171-CART | C-4405 | PRB25SF-JH-PAIR (Spec table PDF p.32: PRB25SF, 5" × 6-5/8", 2-1/8" open, 3 oz, 25 sq ft, case quantity 12. PRB25SF-PAIR and PRB25SF-JH-PAIR, same body, 50 sq ft, case quantity 6. Cross-reference PDF p.47: C-4405 = PRB25SF-JH-PAIR.) | FC-2387 (Dimensional listing PDF p.9 (printed p.16): FC-2387, 4-15/16" × 6-5/8", 2-1/8" open, PRB25SF-PAIR/JH, C-4405, 50 sq ft, 6 sets. Note: two cartridges per set with stick handle. PDC Spas section does not list FC-2387.) | 4-15/16" (125 mm) × 6-5/8" (168 mm), 25 sq ft | 2-1/8" / open / 2-1/8" / open | |
| PDC Spas PRB7B cartridge (OEM FLT-118) | FLT-118 | not listed | PRB7B (Deactivated list, PDF p.23: PRB7B, replacement N/A. No PRB7B line in the 2023 spec table. PRB17.5SF-PAIR (PDF p.31) is 5" × 4-5/8", 35 sq ft, and is not named as the replacement.) | not listed (PDC Spas section, PDF p.23 (printed p.45): FC-2386, Rainbow DSF 35, two per set, PRB17.5SF-PAIR/JH, C-4401, 35 sq ft, 4-15/16" × 4-5/8". No PRB7B and no FLT-118.) | 5" (127 mm) × 4-5/8" (117 mm), 17 sq ft | 2-1/8" / open / 2-1/8" / open | |
| PDC Spas C-4310 cartridge (OEM FLT-101SK) | FLT-101SK | C-4310 | PWW10 (Spec table PDF p.31: PWW10, 4-1/4" × 4", 2-1/16" open, 3 oz, 10 sq ft, Waterway Skim Filter 10, OEM 817-0010. PWW10PAIR is 20 sq ft. Cross-reference PDF p.47: C-4310 = PWW10.) | FC-3077 (Dimensional listing PDF p.8 (printed p.15) and PDC Spas section PDF p.23 (printed p.45): FC-3077, 4-1/4" × 4", 1-15/16" open, Skim Filter 10, PWW10, C-4310, 10 sq ft.) | 4-1/4" (108 mm) × 4" (102 mm), 10 sq ft | 2-1/16" / open / 2-1/16" / open | |
| PDC Spas 4CH-15 cartridge (OEM FLT-1000-CART) | FLT-1000-CART, 817-0020 | 4CH-15 | not listed (Not in the Pleatco 2023 Unicel cross-reference (no 4CH-15, no 817-0020).) | not listed (Not in Filbur’s PDC Spas section (printed p.45).) | 4-5/8" (117 mm) × 5-3/16" (132 mm), 15 sq ft | dual bar handle / 1-1/2" SAE | |
| PDC Spas 4CH-949 cartridge (OEM FLT-SWIM50-CART) | FLT-SWIM50-CART | 4CH-949 | PWW50L (Cross-reference PDF p.47: 4CH-949 = PWW50L. Spec table PDF p.32: 5" × 13-3/16", handle, 1-1/2" female SAE, 3 oz, 50 sq ft, Waterway Teleweir 50, OEM 817-4050. Deactivated PDC570-AFS points at PWW50L; PDC’s 2025 guide does not print PDC570-AFS.) | FC-0172 (Dimensional listing PDF p.9 (printed p.17): FC-0172, 4-15/16" × 13-1/2", handle, 2" female SAE, 4CH-949, 50 sq ft. PDC Spas section does not list it.) | 4-15/16" (125 mm) × 13-1/2" (343 mm), 50 sq ft | v-groove semi-circular handle / 2" female SAE thread | |
| PDC Spas C-4975 cartridge (OEM FLT-SWIM75-CART) | FLT-SWIM75-CART | C-4975 | PRB75 (Cross-reference PDF p.47: C-4975 = PRB75. Spec table PDF p.32: 5" × 20-1/8", 2-1/8" open, 3 oz, 75 sq ft. Deactivated PDC100-AFS points at PRB75; PDC’s 2025 guide does not print PDC100-AFS.) | FC-2395 (Dimensional listing PDF p.9 (printed p.17): FC-2395, 4-15/16" × 20-1/8", 2-1/8" open, PRB75, C-4975, 75 sq ft. PDC Spas section does not list it.) | 4-15/16" (125 mm) × 20-1/8" (511 mm), 75 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Coleman Spas 4CH-252 cartridge (OEM FIL11100303) | FIL11100303 | 4CH-252 | PMA20-F2M (Unicel cross-reference PDF p.47: 4CH-252 = PMA20-F2M. The Coleman OEM is not on that Pleatco spec line.) | not listed (Coleman Spas section, PDF pp.16-17, has no FIL11100303 and no 4CH-252.) | 4-5/8" (117 mm) × 8" (203 mm), 25 sq ft | molded cone handle / 2" male thread/MPT | |
| Coleman Spas 7CH-32 cartridge (OEM 100432) | 100432, 3301-1018 | 7CH-32 | not listed | FC-0425 (Coleman Spas section PDF p.16: FC-0425, 7 x 8, OEM 100432, PCS32P, 7CH-32, 32 sq ft. Dimensional listing PDF p.11 also prints 32 sq ft. A Water's Edge Spas row prints 35 sq ft for the same Filbur number.) | 7" (178 mm) × 8" (203 mm), 32 sq ft | semi-circular handle / 1-1/2" male thread/MPT | |
| Coleman Spas 7CH-322 cartridge (OEM 100520) | 100520, 3301-2109 | 7CH-322 | PAS35-F2M (Cross-reference PDF p.47 and spec table PDF p.34: 7CH-322 = PAS35-F2M, 7-1/8" x 7-9/16", 35 sq ft, OEM 100520 and 3301-2109. The deactivated list sends PCS32-2 (with a 2" adapter) to PAS35-F2M.) | FC-0420 (Coleman section PDF p.16: FC-0420, 7 x 8, OEM 100520, cell PAS35-2, 7CH-322, 32 sq ft. Dimensional listing PDF p.11 agrees on 32 sq ft.) | 7" (178 mm) × 8" (203 mm), 32 sq ft | semi-circular handle / 2" male thread/MPT | |
| Coleman Spas 7CH-40 cartridge (OEM 100433) | 100433, 3301-1019 | 7CH-40 | not listed | FC-0435 (Coleman section PDF p.16: FC-0435, 7 x 9-3/4, OEM 100433, PCS40P, 7CH-40, 40 sq ft, 1-1/2" MPT.) | 7" (178 mm) × 9-3/4" (248 mm), 40 sq ft | semi-circular handle / 1-1/2" male thread/MPT | |
| Coleman Spas 7CH-402 cartridge (OEM 100521) | 100521, 3301-2110 | 7CH-402 | not listed | FC-0430 (Coleman section PDF p.16: FC-0430, 7 x 9-3/4, 2" MPT, OEM 100521, PCS40-F2M, 7CH-402, 40 sq ft.) | 7" (178 mm) × 9-3/4" (248 mm), 40 sq ft | semi-circular handle / 2" male thread/MPT | |
| Coleman Spas 7CH-50 cartridge (OEM 100434) | 100434, 3301-1020 | 7CH-50 | not listed | FC-0463 (Coleman section PDF p.16: FC-0463, 7 x 14-3/4, OEM 100434, PVT50P, 7CH-50, 50 sq ft, 1-1/2" MPT.) | 7" (178 mm) × 14-3/4" (375 mm), 50 sq ft | semi-circular handle / 1-1/2" male thread/MPT | |
| Coleman Spas 7CH-502 cartridge (OEM 100522) | 100522, 3301-2111 | 7CH-502 | not listed | FC-0460 (Coleman section PDF p.16: FC-0460, 7 x 14-3/4, 2" MPT, OEM 100522, PCS50-F2M, 7CH-502, 50 sq ft.) | 7" (178 mm) × 14-3/4" (375 mm), 50 sq ft | semi-circular handle / 2" male thread/MPT | |
| Coleman Spas C-4326 cartridge (OEM 100586) | 100586, 3301-2242 | C-4326 | PRB25-IN (Spec table PDF p.32: PRB25-IN, 5" x 13-5/16", open 2-1/8", 25 sq ft; the OEM list includes 100586.) | FC-2375 (Coleman section PDF p.16: FC-2375, 4-15/16" x 13-5/16", OEM 100586, PRB25-IN, C-4326, 25 sq ft.) | 4-15/16" (125 mm) × 13-5/16" (338 mm), 25 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Coleman Spas C-4339 cartridge (OEM 100585) | 100585, 3301-2241 | C-4339 | not listed | FC-2915 (Coleman section PDF p.16: FC-2915, 4-15/16" x 11-1/4", open, OEM 100585, PWW40, C-4339, 40 sq ft, described as Waterway 40.) | 4-15/16" (125 mm) × 11-1/4" (286 mm), 40 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Coleman Spas C-4950 cartridge (OEM 100533) | 100533, 3301-2145 | C-4950 | PRB50-IN (Spec table PDF p.32: PRB50-IN lists OEM 100533, 5" x 13-5/16", open 2-1/8", 50 sq ft.) | FC-2390 (Coleman section PDF p.16: FC-2390, OEM 100533, PRB50-IN, C-4950, 50 sq ft.) | 4-15/16" (125 mm) × 13-5/16" (338 mm), 50 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Coleman Spas C-8450 cartridge (OEM 100593) | 100593, 3301-2261 | C-8450 | PCS50N (Spec table PDF p.35: PCS50N, 8" x 9", 2-1/8" open, 2" slip, 50 sq ft, OEM 100593 and 3301-2261.) | FC-3310 (Coleman section PDF p.16: FC-3310, 8 x 9, 2-1/16" open, male slip, OEM 100593, PCS50N, C-8450, 50 sq ft, model dated after 1992.) | 8" (203 mm) × 9" (229 mm), 50 sq ft | 2-1/16" / open / 2" male slip fitting | |
| Coleman Spas C-8475 cartridge (OEM 100594) | 100594, 3301-2262 | C-8475 | PCS75N (Spec table PDF p.35: PCS75N, 8" x 13", 2-1/8" open, 2" slip, 75 sq ft, OEM 100594 and 3301-2262.) | FC-3320 (Coleman section PDF p.17: FC-3320, OEM 100594, PCS75N, C-8475, 75 sq ft, model dated after 1992.) | 8" (203 mm) × 13" (330 mm), 75 sq ft | 2-1/16" / open / 2" male slip fitting | |
| Maax Spas 5CH-25 cartridge (OEM 108868) | 108868 | 5CH-25 | PMAX25P4 (Spec table PDF p.32 and cross-reference PDF p.47: 5CH-25 = PMAX25P4, OEM 108868, 5-3/4" x 6", 1-1/2" MPT, 25 sq ft. Application index PDF p.27: Maax Spas 25 (1.50" MPT).) | not listed (No 5CH-25, PMAX25 or 108868 row found in the Filbur catalog text.) | 5-5/8" (143 mm) × 6" (152 mm), 25 sq ft | semi-circular handle / 1-1/2" male thread/MPT | |
| Maax Spas 5CH-35 cartridge (OEM 104309) | 104309 | 5CH-35 | PMAX50P4 (Cross-reference PDF p.47: 5CH-35 = PMAX50P4. Spec PDF p.32: PMAX50P4 is 5-3/4" x 8", 1-1/2" MPT, 50 sq ft, Maax Spas of Canada, no OEM. The same page prints PAS35P4 at 5-7/8" x 7-3/4", 35 sq ft, Elite Spas (Coleman), no OEM.) | FC-0300 (PDF p.16, Coleman section: FC-0300, 5-5/8" x 8", 1-1/2" MPT, 35 sq ft, PAS35P, 5CH-35, Elite Spa by Coleman. PDF p.18: Maax/Coleman Spas, same size, 35 sq ft. OEM 104309 is not in those cells.) | 5-5/8" (143 mm) × 8" (203 mm), 35 sq ft | semi-circular handle / 1-1/2" male thread/MPT | |
| Maax Spas C-4950 cartridge (OEM 100533) | 100533 | C-4950 | PRB50-IN (Spec table PDF p.32: PRB50-IN lists OEM 100533 at 5" OD, 50 sq ft.) | FC-2390 (Filed under Coleman Spas, PDF p.16, not under a Maax heading: FC-2390, OEM 100533, C-4950, 50 sq ft.) | 4-15/16" (125 mm) × 13-5/16" (338 mm), 50 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Maax Spas C-5374 cartridge (OEM 107092) | 107092 | C-5374 | PLBS75 (Cross-reference PDF p.47: C-5374 = PLBS75. Spec table PDF p.32: PLBS75, 5-5/16" x 14-3/4", 75 sq ft, OEM 817-0015, 303433, R173600.) | FC-2971 (Dimensional listing: FC-2971, 5-5/16" x 14-11/16", open 2-1/8", PLBS75, C-5374, 65 sq ft.) | 5-5/16" (135 mm) × 14-13/16" (376 mm), 65 sq ft | 2-1/8" / open / 2-1/8" / open | |
| Maax Spas C-8450 cartridge (OEM 100593) | 100593 | C-8450 | PCS50N (Spec table PDF p.35: PCS50N lists OEM 100593 and 3301-2261, 2-1/8" open, 2" slip, 50 sq ft.) | FC-3310 (Coleman section PDF p.16, not a Maax heading: FC-3310, OEM 100593, PCS50N, C-8450, 50 sq ft, with the after-1992 note.) | 8" (203 mm) × 9" (229 mm), 50 sq ft | 2-1/16" / open / 2" male slip fitting | |
| Maax Spas C-8475 cartridge (OEM 100594) | 100594 | C-8475 | PCS75N (Spec table PDF p.35: PCS75N, OEM 100594 and 3301-2262, 8" x 13", 2-1/8" open, 2" slip, 75 sq ft.) | FC-3320 (Coleman section PDF p.17: FC-3320, OEM 100594, PCS75N, C-8475, 75 sq ft, after-1992 note. No Maax heading for this OEM.) | 8" (203 mm) × 13" (330 mm), 75 sq ft | 2-1/16" / open / 2" male slip fitting | |
| Waterway Plastics 6CH-940 cartridge (OEM 817-0050) | 817-0050 | 6CH-940 | PWW50P3 (Spec table PDF p.33: PWW50P3, 6" x 7-5/8", 1-1/2" SAE, 50 sq ft, OEM 817-0050, 03FIL1400, 25252, 378902, and PWW50, '2 required.' Cross-reference PDF p.47: 6CH-940 = PWW50P3.) | FC-0359 (Waterway section PDF p.28: FC-0359, 6 x 8-1/4, 1-1/2" SAE, OEM 817-0050, PWW50P3, 6CH-940, sq ft column 40, two cartridges side by side.) | 6" (152 mm) × 8-1/4" (210 mm), 45 sq ft | semi-circular handle / 1-1/2" SAE | |
| Waterway Plastics 6CH-941 cartridge (OEM 817-0011) | 817-0011 | 6CH-941 | not listed (Spec table PDF p.33: PWW100P3-SET, 6" x 16-1/2", handle, 1-1/2" SAE, 100 sq ft, OEM 817-0011 / 817-0012 and CMP 25253 / 25254. Cross-reference PDF p.47 sends both 6CH-941 and 6CH-942 to that set. Not stored as this row's Pleatco equivalent because it is the pair.) | FC-0360 (Waterway section PDF p.28: FC-0360, 6 x 8-1/4, 1-3/4" male slip, OEM 817-0011, PWW100ST-P3, 6CH-941, sq ft column 80, stacked with FC-0361.) | 6" (152 mm) × 8-1/4" (210 mm), 45 sq ft | semi-circular handle / 1-3/4" male slip | |
| Waterway Plastics 6CH-942 cartridge (OEM 817-0012) | 817-0012 | 6CH-942 | not listed (The set PWW100P3-SET (PDF p.33, cross-reference PDF p.47) names 817-0012 together with 817-0011. Not stored on this row.) | FC-0361 (Waterway section PDF p.28: FC-0361, 6 x 8-1/4, 1-3/4" open top, 1-1/2" SAE bottom, OEM 817-0012, 6CH-942, sq ft column 80.) | 6" (152 mm) × 8-1/4" (210 mm), 45 sq ft | 1-3/4" open / 1-1/2" SAE | |
| Waterway Plastics 4CH-926 cartridge (OEM 817-4025) | 817-4025 | 4CH-926 | PWW25L (Spec table PDF p.32: PWW25L, 5" x 13-3/16", handle, 1-1/2" female SAE, 25 sq ft, Waterway Teleweir 25. No 817-4025 on that line. Cross-reference PDF p.47: 4CH-926 = PWW25L.) | FC-0168 (Dimensional listing: FC-0168, 4-15/16" x 13-1/16", handle, 1-1/2" female SAE, Waterway Teleweir 25, PWW25L, 4CH-926, 25 sq ft. The Waterway manufacturer section does not print 817-4025.) | 4-15/16" (125 mm) × 13-1/2" (343 mm), 25 sq ft | v-groove handle / 2" female SAE | |
| Waterway Plastics 4CH-935 cartridge (OEM 817-4035) | 817-4035 | 4CH-935 | PWW35L (Spec table PDF p.32: PWW35L, 5" x 8-1/2", 1-1/2" female SAE, 35 sq ft, OEM 817-4035. Cross-reference PDF p.47: 4CH-935 = PWW35L.) | FC-0170 (Waterway section PDF p.28: FC-0170, 4-15/16" x 9-1/4", 1-1/2" female SAE, OEM 817-4035, Unicel N/A, 30 sq ft.) | 4-15/16" (125 mm) × 9-1/4" (235 mm), 35 sq ft | v-groove handle / 2" female SAE | |
| Waterway Plastics 4CH-949 cartridge (OEM 817-4050) | 817-4050 | 4CH-949 | PWW50L (Spec table PDF p.32: PWW50L, 5" x 13-3/16", 1-1/2" female SAE, 50 sq ft, OEM 817-4050. Cross-reference PDF p.47: 4CH-949 = PWW50L.) | FC-0172 (Rising Dragon section: FC-0172, 4-15/16" x 13-1/2", 2" female SAE, 4CH-949, 50 sq ft. OEM cell does not print 817-4050.) | 4-15/16" (125 mm) × 13-1/2" (343 mm), 50 sq ft | v-groove handle / 2" female SAE | |
| Waterway Plastics C-4310 cartridge (OEM 817-0010) | 817-0010 | C-4310 | PWW10 (Spec table: PWW10, 4-1/4" x 4", 2-1/16" open, 10 sq ft, OEM 817-0010. PWW10PAIR is 20 sq ft. Cross-reference PDF p.47: C-4310 = PWW10.) | FC-3077 (Waterway section PDF p.28: FC-3077, 4-1/4" x 4", top opening 1-15/16", OEM 817-0010, PWW10, C-4310, 10 sq ft.) | 4-1/4" (108 mm) × 4" (102 mm), 10 sq ft | 2-1/16" open / 2-1/16" open | |
| Waterway Plastics C-4326 cartridge (OEM 817-2500) | 817-2500 | C-4326 | PRB25-IN (Spec table PDF p.32: PRB25-IN, 5" x 13-5/16", open 2-1/8", 25 sq ft, OEM list includes 817-2500.) | FC-2375 (Waterway section PDF p.28: FC-2375 at 13-5/16" and FC-2910 at 12-1/4", both OEM 817-2500 and Unicel C-4326. Size table: FC-2910 at 13-1/4".) | 4-15/16" (125 mm) × 13-5/16" (338 mm), 25 sq ft | 2-1/8" open / 2-1/8" open | |
| Waterway Plastics C-4950 cartridge (OEM 817-5000) | 817-5000 | C-4950 | PRB50-IN (Spec table PDF p.32: PRB50-IN, 5" x 13-5/16", open 2-1/8", 50 sq ft, OEM list includes 817-5000.) | FC-2390 (Waterway section PDF p.28: FC-2390, 4-15/16" x 13-5/16", open 2-1/8", OEM 817-5000, C-4950, 50 sq ft.) | 4-15/16" (125 mm) × 13-5/16" (338 mm), 50 sq ft | 2-1/8" open / 2-1/8" open | |
| Waterway Plastics C-4970 cartridge (OEM 817-7500) | 817-7500 | C-4970 | not listed (Deactivated list PDF p.21: PCAL75 replacement PCAL100. No 817-7500 and no C-4970 in the 2023 spec table or Unicel cross-reference.) | FC-2930 (Waterway section PDF p.28: FC-2930, 4-15/16" x 23-5/8", OEM 817-7500, PCAL75, C-4970, 75 sq ft.) | 4-15/16" (125 mm) × 23-5/8" (600 mm), 75 sq ft | 2-1/8" open / 2-1/8" open | |
| Waterway Plastics C-4995 cartridge (OEM 817-1000) | 817-1000 | C-4995 | PCAL100 (Spec table PDF p.32: PCAL100, 5" x 23-5/8", open 2-1/8", 100 sq ft, OEM 817-1000. Cross-reference PDF p.47: C-4995 = PCAL100. Deactivated PCAL75 points here.) | FC-2940 (Waterway section PDF p.28: FC-2940, OEM 817-1000, PCAL100, C-4995, sq ft column 100. A later size-table row prints FC-2940 / C-4995 at 95.) | 4-15/16" (125 mm) × 23-5/8" (600 mm), 95 sq ft | 2-1/8" open / 2-1/8" open | |
| Waterway Plastics C-6375 cartridge (OEM 817-0018) | 817-0018 | C-6375 | not listed (No C-6375 line in the 2023 Unicel cross-reference.) | FC-3754 (Waterway section PDF p.28: FC-3754, 6-9/16" x 13-5/16", open 2-3/8", OEM 817-0018, C-6375, 75 sq ft.) | 6-9/16" (167 mm) × 13-5/16" (338 mm), 75 sq ft | 2-3/8" open / 2-3/8" open | |
| Saratoga Spas 4CH-20 cartridge (OEM 20241-238) | 20241-238 | 4CH-20 | PSG25P4 (Spec table PDF p.31: PSG25P4, 4-3/4" x 6-1/2", 1-1/2" MPT, 25 sq ft, OEM 20241-238. PSG25-XP4 is the no-adapter twin, same OEM and size. Cross-reference PDF p.47 has no 4CH-20 line. Deactivated list: PHC25 and PHC25P4 replacement N/A.) | FC-0125 (Saratoga section PDF p.25: FC-0125, 4-5/8" x 6-3/4", 1-1/2" MPT, PHC25, 4CH-20, 15 sq ft. Size table: description '20 sq. ft. Top Load,' column 25. Vita section PDF p.28: 25 sq ft, OEM PVT-25.) | 4-5/8" (117 mm) × 6-3/4" (171 mm), 20 sq ft | molded cone handle / 1-1/2" MPT | |
| Saratoga Spas 4CH-920 cartridge (1-1/4" SAE) | not listed | 4CH-920 | not listed (No 4CH-920 line in the 2023 Unicel cross-reference. PSG13.5P4 (PDF p.31) is 4-3/4" x 5-15/16", 14 sq ft, OEM 303575.) | FC-0124 (Saratoga section PDF p.25: FC-0124, 4-5/8" x 6-3/4", 1-1/4" SAE, PSG13.5, 4CH-920, 15 sq ft. The adapter footnote is on this section.) | 4-5/8" (117 mm) × 6-3/4" (171 mm), 20 sq ft | molded cone handle / 1-1/4" SAE | |
| Saratoga Spas 4CH-21 cartridge (OEM 20245-238) | 20245-238 | 4CH-21 | PTL18P4 (Spec table PDF p.31: PTL18P4, 4-5/8" x 8", 1-1/2" MPT, 18 sq ft, OEM 20245-238 and PVT-25N. Cross-reference PDF p.47: 4CH-21 = PTL18P4.) | FC-0121 (Saratoga section PDF p.25: FC-0121, 4-5/8" x 8", 1-1/2" MPT, PTL18-4, 4CH-21, 19 sq ft.) | 4-5/8" (117 mm) × 8" (203 mm), 19 sq ft | molded cone handle / 1-1/2" MPT | |
| Saratoga Spas 4CH-24 cartridge (OEM 20254-238) | 20254-238 | 4CH-24 | PGS25P4 (Spec table PDF p.31: PGS25P4, 4-5/8" x 9-3/4", 1-1/2" MPT, 25 sq ft, OEM 20254-238. Cross-reference PDF p.47: 4CH-24 = PGS25P4.) | FC-0131 (Saratoga section PDF p.25: FC-0131, 4-5/8" x 9-3/4", 1-1/2" MPT, PGS25P4, 4CH-24, 25 sq ft.) | 4-5/8" (117 mm) × 9-3/4" (248 mm), 25 sq ft | molded cone handle / 1-1/2" MPT | |
| Saratoga Spas 4CH-30 cartridge (OEM 74407-98) | 74407-98 | 4CH-30 | not listed (No 4CH-30 line in the 2023 Unicel cross-reference. Deactivated list: PTL25P4 replacement PSG27.5P4. PSG27.5P4 spec, PDF p.31, does not print 74407-98.) | FC-0141 (Saratoga section PDF p.25: FC-0141, 4-5/8" x 11-7/8", 1-1/2" MPT, PTL25P-4, 4CH-30, 27 sq ft.) | 4-5/8" (117 mm) × 11-7/8" (302 mm), 30 sq ft | molded cone handle / 1-1/2" MPT | |
| Saratoga Spas 4CH-950 cartridge (OEM 74408-99) | 74408-99 | 4CH-950 | not listed (Deactivated list: PDO-UF25 replacement N/A. No 4CH-950 line found in the 2023 Unicel cross-reference.) | FC-0173 (Saratoga section PDF p.25: FC-0173, 4-5/8" x 11-7/8", 1-1/4" SAE, PDO-UF25P2, 4CH-950, 27 sq ft. Size table: '25 sq. ft. Top Load,' column 25.) | 4-5/8" (117 mm) × 12" (305 mm), 25 sq ft | semi-circular handle / 1-1/4" SAE |
Questions
Which part numbers can I look up?
Any OEM, Unicel, Pleatco, or Filbur number that is already in this site’s dataset. The dataset is built from the Unicel 2026 Replacement Guide, the Pleatco 2023 catalog, the Filbur catalog, and the other sources named on each filter page. A number that is not in those sources will not appear. This lookup does not invent a match.
Does one number always mean one cartridge?
No. Some numbers are listed on more than one cartridge. The lookup lists every row that carries the number you typed, with that row’s diameter, length, fittings, and square feet when a source printed them. Open each filter page and compare before you order.
Is a catalog cross-reference the same filter the spa maker sells?
No. A cross-reference is the filter maker’s match on size and fittings. Hot Spring’s maintenance page says to replace with genuine Watkins filters. Jacuzzi recommends filters designed for the specific model. Check the filter page, then the fittings, before you buy.
Sources
Each filter page names the catalog page its row came from. The documents behind the dataset, and the two maker sentences in the FAQ, are:
- Unicel 2026 Replacement Guide
- Pleatco 2023 Catalog (Pentair)
- Filbur Catalog & Reference Guide
- Hot Spring Spas: Maintenance Tips
- Jacuzzi: Hot Tub Filter Cleaning Made Easy
Numbers on this page are the ones those rows already store. The method is on the about page. A correction goes to contact, which reaches [email protected] and no other address.
Related: OEM vs Unicel vs Pleatco, how Filbur, Unicel, and Pleatco numbers compare, how to find your spa filter size, the replace and clean calculator, and the replacement schedule and reorder page, which adds the buy link for the cartridge you pick.