4-5/8" × 8"
Coleman Spas spa filters
Unicel’s Coleman list is part numbers, not model names. It says the 3301-xxxx format was used through 2001 and the 100xxx format since 2002. Three lengths come as a 1-1/2" MPT cartridge and a 2" MPT cartridge that share a body, so the thread is the difference between 7CH-32 and 7CH-322, 7CH-40 and 7CH-402, and 7CH-50 and 7CH-502.
The short 2" cartridge, OEM 100520, is 32 sq ft at 7" × 8" in Unicel’s spec table and in Filbur, and 35 sq ft at 7-1/8" × 7-9/16" in Pleatco. The pairs, the after-1992 slip cartridges, and the places the catalogs disagree are on the Coleman filter page.
This page lists 12 Coleman Spas replacement cartridges from the Unicel 2026 Replacement Guide, the Pleatco 2023 catalog and the Filbur catalog. 11 have a Filbur number. Find your spa filter by the OEM part number on the end cap, or measure it and compare sizes below.
Clean and replace intervals for one cartridge on this list, plus the cross-reference numbers and a buy link: filter replacement schedule and reorder.
- FIL111003034CH-252, 4-5/8" (117 mm) × 8" (203 mm)See replacement
- 100432; 3301-10187CH-32, 7" (178 mm) × 8" (203 mm)See replacement
- 100520; 3301-21097CH-322, 7" (178 mm) × 8" (203 mm)See replacement
- 100433; 3301-10197CH-40, 7" (178 mm) × 9-3/4" (248 mm)See replacement
- 100521; 3301-21107CH-402, 7" (178 mm) × 9-3/4" (248 mm)See replacement
- 100434; 3301-10207CH-50, 7" (178 mm) × 14-3/4" (375 mm)See replacement
- 100522; 3301-21117CH-502, 7" (178 mm) × 14-3/4" (375 mm)See replacement
- 100586; 3301-2242C-4326, 4-15/16" (125 mm) × 13-5/16" (338 mm)See replacement
- 100585; 3301-2241C-4339, 4-15/16" (125 mm) × 11-1/4" (286 mm)See replacement
- 100533; 3301-2145C-4950, 4-15/16" (125 mm) × 13-5/16" (338 mm)See replacement
- 100593; 3301-2261C-8450, 8" (203 mm) × 9" (229 mm)See replacement
- 100594; 3301-2262C-8475, 8" (203 mm) × 13" (330 mm)See replacement
| Cartridge | Unicel | Pleatco | Filbur | Size | Fits | Status |
|---|---|---|---|---|---|---|
| FIL11100303 | 4CH-252 | PMA20-F2M | not listed | 4-5/8" (117 mm) × 8" (203 mm), 25 sq ft | not listed | verified |
| 100432; 3301-1018 | 7CH-32 | not listed | FC-0425 | 7" (178 mm) × 8" (203 mm), 32 sq ft | not listed | verified |
| 100520; 3301-2109 | 7CH-322 | PAS35-F2M | FC-0420 | 7" (178 mm) × 8" (203 mm), 32 sq ft | not listed | verified |
| 100433; 3301-1019 | 7CH-40 | not listed | FC-0435 | 7" (178 mm) × 9-3/4" (248 mm), 40 sq ft | not listed | verified |
| 100521; 3301-2110 | 7CH-402 | not listed | FC-0430 | 7" (178 mm) × 9-3/4" (248 mm), 40 sq ft | not listed | verified |
| 100434; 3301-1020 | 7CH-50 | not listed | FC-0463 | 7" (178 mm) × 14-3/4" (375 mm), 50 sq ft | not listed | verified |
| 100522; 3301-2111 | 7CH-502 | not listed | FC-0460 | 7" (178 mm) × 14-3/4" (375 mm), 50 sq ft | not listed | verified |
| 100586; 3301-2242 | C-4326 | PRB25-IN | FC-2375 | 4-15/16" (125 mm) × 13-5/16" (338 mm), 25 sq ft | not listed | verified |
| 100585; 3301-2241 | C-4339 | not listed | FC-2915 | 4-15/16" (125 mm) × 11-1/4" (286 mm), 40 sq ft | not listed | verified |
| 100533; 3301-2145 | C-4950 | PRB50-IN | FC-2390 | 4-15/16" (125 mm) × 13-5/16" (338 mm), 50 sq ft | not listed | verified |
| 100593; 3301-2261 | C-8450 | PCS50N | FC-3310 | 8" (203 mm) × 9" (229 mm), 50 sq ft | not listed | verified |
| 100594; 3301-2262 | C-8475 | PCS75N | FC-3320 | 8" (203 mm) × 13" (330 mm), 75 sq ft | not listed | verified |
Know your model but not the part number? See Coleman Spas filter by model and year.
Brands that share cartridges with Coleman Spas
- Maax Spas, same part numbers C-4950, C-8450, C-8475
- Beachcomber, same part numbers C-4326, C-4950
- Cal Spas, same part numbers 4CH-252, C-4950
- Jacuzzi, same part numbers C-4326, C-4950
- Master Spas, same part numbers 4CH-252, 7CH-322
Guides that apply to Coleman Spas
- Maax Spas of AZ, which shares three Coleman OEM numbers
- Open-end vs threaded, for the 1-1/2" and 2" pairs
- How Filbur, Unicel and Pleatco numbers compare
- How to find your spa filter size
- How to install a cartridge
- All guides
Search Coleman Spas part numbers on Amazon
Each button opens an Amazon search for that part number. The cartridge page is where the cited size and fittings are. Match those before you buy.
Part numbers from this table
-
4CH-252 cartridge (OEM FIL11100303) -
7CH-32 cartridge (OEM 100432) 7" × 8"
-
7CH-322 cartridge (OEM 100520) 7" × 8"
-
7CH-40 cartridge (OEM 100433) 7" × 9-3/4"
Disclosure: we may earn a commission from qualifying purchases made through retailer links on this site, at no extra cost to you. As an Amazon Associate I earn from qualifying purchases. Amazon links on this page go to Amazon.com and are affiliate links; they never change what we write, and the list is not ranked by commission. Each “Search on Amazon” button opens an Amazon search for the part or product name shown, not a single listing we pre-checked. Check size, quantity and your spa maker’s guidance before you buy. See our affiliate disclosure.
Model-year fitment comes only from the sources named on each cartridge page. Where no source lists models or years, the page says so.