Listing we opened and checked. Match the diameter, length and both fittings on this page before you order. The price is on Amazon; we do not print one.
Freedom Spas spa filter (4CH-30)
Freedom Spas
Replacement numbers
Unicel 4CH-30, Pleatco PTL25P-4
Fits Freedom Spas.
Diameter 4-5/8" (117 mm)Length 11-7/8" (302 mm)30 sq ft2 models listedUnicel 4CH-30
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| Unicel | 4CH-30 |
|---|---|
| Pleatco | 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.) |
| Filbur | FC-0141 |
| Top | molded cone handle |
| Bottom | 1-1/2” male thread/MPT |
Bottom: 1-1/2” male thread/MPT
Drawn to scale from the listed diameter and length. Handles, threads and closed ends are drawn as symbols, not to scale. 30 sq ft media.
For Freedom Spas, 4CH-30 cartridge sits in Freedom Spas. The cross-reference prints Unicel 4CH-30; Pleatco PTL25P-4; Filbur FC-0141. 4-5/8" across, 11-7/8" long, top molded cone handle, bottom 1-1/2” male thread/MPT, 30 sq ft.
PTL25P-4 carries this note from the catalogs: Shown at 30 sq ft because that is Unicel's Freedom Spas line, Unicel's spec table (158 pleats, 4 oz), Filbur's size table and Aladdin 13005. Unicel's Sundance line prints the same 4CH-30 for OEM 6540-484 at 25 sq ft, and Filbur's Sundance line does too. Unicel names Franklin, Statesman and Revere. Aladdin's model field uses that same string and lists Freedom among many brands, including Dimension One and Sundance. Pleatco's Unicel cross-reference does not list 4CH-30; PTL25P-4 is Filbur's Pleatco cell.
4CH-30 (OEM 4CH-30 cartridge), Pleatco side: 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..
PTL25P-4, Filbur note: 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..
Model list attached to 4CH-30 cartridge: Franklin, Statesman and Revere, no year range printed, listed by Unicel 2026 Replacement Guide (Unicel Freedom Spas line, 30 sq ft. The same two of those names are also on the 6CH-45 row.); Franklin, Statesman and Revere, no year range printed, listed by Aladdin Equipment cartridge listing (Aladdin 13005 model field. Freedom Spas is one manufacturer in a multi-brand list. 30 sq ft, 158 pleats.).
Before ordering 4CH-30, compare it with C-4637 differs by Unicel C-4637, Pleatco PRB37-IN-4, Filbur FC-2380, 4-15/16" diameter, 13-5/16" long, top 2-1/8" / open, bottom 2-1/8" / open, 37 sq ft, note says Unicel's Freedom list names Concord, Patriot, Ambassador and Executive on this row only: 4-15/16" x 13-5/16", C-4637, 37 sq ft, 4 oz. The spec table gives 158 pleats, 2-1/8" open ends, and calls 37 sq ft an upgrade of the 25 sq ft C-4326 and C-4625. The brands on that spec line are Rainbow, Waterway, Morgan, Leisure Bay and Custom Molded Products, not Freedom. Filbur's Freedom section calls FC-2380 Rainbow Dynamic 37 and does not print the Concord names. PRB37-IN-4 is Filbur's Pleatco cell.; and 6CH-45 differs by Unicel 6CH-45, Pleatco PTL45W-P-4, Filbur FC-0330, 6" diameter, 12-3/8" long, top semi-circular handle, 45 sq ft, note says Length is Unicel's 12-3/8", which Aladdin 14506 also prints. Filbur's size table and Freedom Spas section print FC-0330 at 12-1/4". Unicel names Statesman, Lexington, Enterprise, Aristocrat and Franklin. Aladdin's model field matches that string and names Freedom Spas and Master Spas. Pleatco's number here is Filbur's cell (PTL45W-P-4); Aladdin prints PTL45W-P4-4..
Left blank on purpose: Same Unicel number is 25 sq ft on the Sundance OEM line (6540-484) and 30 sq ft here. Franklin and Statesman are also named on 6CH-45. No Freedom OEM number. PTL25P-4 is not in Pleatco's Unicel cross-reference..
Where those figures are printed: Unicel 2026 Replacement Guide on 4CH-30 (Freedom Spas line, PDF p.35 (printed p.31): Franklin, Statesman, Revere = 4CH-30, 30 sq ft, 4 oz; spec table PDF p.7 (printed p.3): 158 pleats, 30 sq ft, molded cone handle, 1-1/2" MPT; Sundance line PDF p.59 (printed p.55): OEM 6540-484 at 25 sq ft). Filbur Catalog & Reference Guide on 4CH-30 (Dimensional listing PDF p.9: FC-0141 at 30 sq ft. Freedom Spas section PDF p.18 (printed p.35): FC-0141, no Franklin/Statesman/Revere names). Aladdin Equipment on 4CH-30 (Cartridge 13005, fetched 2026-11-06: model field 4CH-Top Load, Franklin, Statesman, Revere; 30 sq ft; 158 pleats; 4-5/8" x 11-7/8"; cone handle; 1-1/2" male thread; Freedom Spas in the manufacturer list).
Hot tubs listed for this cartridge
The rest of the Freedom Spas model list is the Freedom Spas filter by model and year lookup.
| Model / system | Years | Listed by |
|---|---|---|
| Franklin, Statesman and Revere (Unicel Freedom Spas line, 30 sq ft. The same two of those names are also on the 6CH-45 row.) | not given | Unicel 2026 Replacement Guide |
| Franklin, Statesman and Revere (Aladdin 13005 model field. Freedom Spas is one manufacturer in a multi-brand list. 30 sq ft, 158 pleats.) | not given | Aladdin Equipment cartridge listing |
Check the cartridge you removed
Measure diameter, length, and both ends, then compare them with the figures above. The steps are in the measuring guide. Why the bottom decides whether it seals: open-end vs threaded filters. Power, the retainer, and not running the spa empty: how to install a cartridge. Number formats: how Filbur, Unicel and Pleatco numbers compare.
The same 4CH-30 number is also on the Sundance, Dimension One Spas, Saratoga Spas pages.
Other Freedom Spas cartridges
- C-4637 cartridge, 4-15/16" (125 mm) × 13-5/16" (338 mm)
- 6CH-45 cartridge, 6" (152 mm) × 12-3/8" (314 mm)
All 6 Freedom Spas spa filters
Every number on this row, on one screen: cross-reference lookup. Published clean and replace intervals for this cartridge, and a buy link for the numbers above: replacement schedule and reorder. The interval comparison by brand: calculator.
Cleaner and test strips
Hose rinse and soak steps are in how to clean a cartridge. Named cleaners and strips are in filter cleaners and test strips.
Filter cleaner and test strips
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Leisure Time O Filter Clean Cartridge Cleaner Listing title: cartridge cleaner, 32 fl oz.
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SpaGuard Filter Cleaner Listing title: filter cleaner for spas and hot tubs, 1 quart.
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AquaChek SPA 6-in-1 Test Strips Listing title: reads total bromine, total chlorine, free chlorine, pH, total alkalinity and total hardness.
Unicel 4CH-30 Listing we opened and checked. Match the diameter, length and both fittings on this page before you order. The price is on Amazon; we do not print one.
Sources
- Unicel 2026 Replacement Guide: Freedom Spas line, PDF p.35 (printed p.31): Franklin, Statesman, Revere = 4CH-30, 30 sq ft, 4 oz; spec table PDF p.7 (printed p.3): 158 pleats, 30 sq ft, molded cone handle, 1-1/2" MPT; Sundance line PDF p.59 (printed p.55): OEM 6540-484 at 25 sq ft (PDF)
- Filbur Catalog & Reference Guide: Dimensional listing PDF p.9: FC-0141 at 30 sq ft. Freedom Spas section PDF p.18 (printed p.35): FC-0141, no Franklin/Statesman/Revere names (PDF)
- Aladdin Equipment: Cartridge 13005, fetched 2026-11-06: model field 4CH-Top Load, Franklin, Statesman, Revere; 30 sq ft; 158 pleats; 4-5/8" x 11-7/8"; cone handle; 1-1/2" male thread; Freedom Spas in the manufacturer list (web page)
Not in sources: Same Unicel number is 25 sq ft on the Sundance OEM line (6540-484) and 30 sq ft here. Franklin and Statesman are also named on 6CH-45. No Freedom OEM number. PTL25P-4 is not in Pleatco's Unicel cross-reference..