Maax Spas OEM 100594 spa filter (C-8475)

Maax Spas of AZ

Replacement numbers

Unicel C-8475, Pleatco PCS75N

Fits Maax Spas OEM 100594.

Diameter 8" (203 mm)Length 13" (330 mm)75 sq ft

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UnicelC-8475
PleatcoPCS75N (Spec table PDF p.35: PCS75N, OEM 100594 and 3301-2262, 8" x 13", 2-1/8" open, 2" slip, 75 sq ft.)
FilburFC-3320
Top2-1/16" (52 mm) / open
Bottom2" male slip fitting
Ø 8" (203 mm)13" (330 mm)Side view · end views belowTopBottom
Top: 2-1/16" (52 mm) / open
Bottom: 2" male slip fitting
Drawn to scale from the listed diameter and length and open-end sizes. Handles, threads and closed ends are drawn as symbols, not to scale. 75 sq ft media.

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Maax Spas of AZ is the group name on the Maax Spas row C-8475 cartridge (OEM 100594). Match these numbers: OEM 100594; Unicel C-8475; Pleatco PCS75N; Filbur FC-3320. 8" across, 13" long, top 2-1/16" / open, bottom 2" male slip fitting, 75 sq ft.

Catalog note for 100594: Maax of AZ lists OEM 100594 as C-8475, 75 sq ft, 8" x 13", 2" male slip, with no model name and without Coleman's after-1992 note or the 3301-2262 twin. The spec table gives a 2-1/16" opening and 197 pleats. Pleatco PCS75N prints 2-1/8". This is the longer slip cartridge, not the 9" OEM 100593.

C-8475 (OEM 100594), Pleatco side: Spec table PDF p.35: PCS75N, OEM 100594 and 3301-2262, 8" x 13", 2-1/8" open, 2" slip, 75 sq ft..

100594, Filbur note: Coleman section PDF p.17: FC-3320, OEM 100594, PCS75N, C-8475, 75 sq ft, after-1992 note. No Maax heading for this OEM..

Hold C-8475 next to C-8450 differs by Unicel C-8450, Pleatco PCS50N, Filbur FC-3310, 9" long, 50 sq ft, OEM 100593, note says Maax of AZ lists OEM 100593 as C-8450, 50 sq ft, 8" x 9", 2" male slip, and names no model. It does not print the model-dated-after-1992 sentence. That sentence is under Coleman's copy of the same OEM, which also prints 3301-2261. This row does not copy the date or the 3301 number onto Maax. Pleatco's opening is 2-1/8". Unicel and Filbur print 2-1/16".; C-4950 differs by Unicel C-4950, Pleatco PRB50-IN, Filbur FC-2390, 4-15/16" diameter, 13-5/16" long, top 2-1/8" / open, bottom 2-1/8" / open, 50 sq ft, OEM 100533, note says Maax of AZ prints OEM 100533 on a 50 sq ft, 4-15/16" x 13-5/16" line and names no model. The heading says see also Coleman Spas. Coleman's block pairs 100533 with 3301-2145. This Maax row does not add the 3301 number, because Unicel does not print it under Maax. Pleatco's outside diameter for PRB50-IN is 5"..

Left blank on purpose: No model name. Opening 2-1/16" versus 2-1/8". The year note and 3301-2262 stay on the Coleman row..

Where those figures are printed: Unicel 2026 Replacement Guide on C-8475 (Maax Spas of AZ PDF p.44: 100594 = C-8475, 75 sq ft, 8" x 13", 2" male slip, no model. Spec table PDF p.20: 2-1/16" open, 197 pleats, 75 sq ft.). Pleatco 2023 Catalog on C-8475 (Spec table PDF p.35: PCS75N lists OEM 100594 and 3301-2262). Filbur Catalog & Reference Guide on C-8475 (Coleman Spas section PDF p.17: FC-3320, OEM 100594, C-8475, 75 sq ft).

If you know the Maax Spas model and not the part number, use the Maax Spas filter by model and year lookup.

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 C-8475 number is also on the Coleman Spas page.

Other Maax Spas cartridges

All 6 Maax Spas spa filters

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Cleaner and test strips

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Sources

Not in sources: No model name. Opening 2-1/16" versus 2-1/8". The year note and 3301-2262 stay on the Coleman row..