Coleman Spas OEM FIL11100303 spa filter (4CH-252)

Coleman Spas

Replacement numbers

Unicel 4CH-252, Pleatco PMA20-F2M

Fits Coleman Spas OEM FIL11100303.

Diameter 4-5/8" (117 mm)Length 8" (203 mm)25 sq ft

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Unicel4CH-252
PleatcoPMA20-F2M (Unicel cross-reference PDF p.47: 4CH-252 = PMA20-F2M. The Coleman OEM is not on that Pleatco spec line.)
Filburnot found in Filbur catalog
Topmolded cone handle
Bottom2" male thread/MPT
Ø 4-5/8" (117 mm)8" (203 mm)Side view · end views belowTopBottom
Top: molded cone handle
Bottom: 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. 25 sq ft media.

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Coleman Spas files this cartridge as 4CH-252 cartridge (OEM FIL11100303), in the Coleman Spas group. Numbers on the row: OEM FIL11100303; Unicel 4CH-252; Pleatco PMA20-F2M. 4-5/8" across, 8" long, top molded cone handle, bottom 2" male thread/MPT, 25 sq ft.

FIL11100303 carries this note from the catalogs: Unicel's Coleman block prints OEM FIL11100303 as 4CH-252, 25 sq ft, 4-5/8" x 8", 2" MPT, and notes that the Coleman original is 4-3/4" OD. There is no 3301 twin on this row. The same OEM is also on Unicel's Cal Spas line. Pleatco's cross-reference sends 4CH-252 to PMA20-F2M. Filbur's Coleman section does not list FIL11100303.

4CH-252 (OEM FIL11100303), Pleatco side: Unicel cross-reference PDF p.47: 4CH-252 = PMA20-F2M. The Coleman OEM is not on that Pleatco spec line..

FIL11100303, Filbur note: Coleman Spas section, PDF pp.16-17, has no FIL11100303 and no 4CH-252..

4CH-252 is easy to confuse on the Coleman Spas table. C-4339 differs by Unicel C-4339, no Pleatco number, Filbur FC-2915, 4-15/16" diameter, 11-1/4" long, top 2-1/8" / open, bottom 2-1/8" / open, 40 sq ft, OEM 100585, note says Coleman's 40 sq ft open cartridge, shorter than the 13-5/16" pair. Unicel prints OEM 100585 and 3301-2241. The spec table gives 4-15/16" x 11-1/4", open 2-1/8", 216 pleats, 3 oz, 40 sq ft, and describes it as Waterway. Filbur's Coleman section repeats OEM 100585, calls the row Waterway 40, and prints Pleatco cell PWW40. Pleatco deactivates PWW40 with replacement N/A.. C-4326 differs by Unicel C-4326, Pleatco PRB25-IN, Filbur FC-2375, 4-15/16" diameter, 13-5/16" long, top 2-1/8" / open, bottom 2-1/8" / open, OEM 100586, note says Coleman's 25 sq ft open cartridge. Unicel prints OEM 100586 and 3301-2242 at 4-15/16" x 13-5/16". Filbur's Coleman section prints FC-2375, OEM 100586, PRB25-IN, C-4326, 25 sq ft. Pleatco's PRB25-IN spec lists OEM 100586 among other brands and prints the outside diameter as 5". There is no Coleman model name. This is not the 50 sq ft C-4950, which is the same length..

Filbur does not have a number on this row. Search FIL11100303 or the Coleman Spas part you pulled out of the spa.

Left blank on purpose: No Filbur row in the Coleman section. No Coleman model name. Pleatco's PMA20-F2M spec line does not print FIL11100303..

Pages checked for FIL11100303: Unicel 2026 Replacement Guide on 4CH-252 (Coleman Spas OEM block, PDF p.32 (printed p.28): FIL11100303 = 4CH-252, 25 sq ft, 2" MPT; original OD noted as 4-3/4". Spec table: 4-5/8" x 8", cone handle, 213 pleats, 3 oz, 25 sq ft.). Pleatco 2023 Catalog on 4CH-252 (Unicel cross-reference PDF p.47: 4CH-252 = PMA20-F2M).

If you know the Coleman Spas model and not the part number, use the Coleman 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 4CH-252 number is also on the Cal Spas, Master Spas pages.

Other Coleman Spas cartridges

All 12 Coleman 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

Sources

Not in sources: No Filbur row in the Coleman section. No Coleman model name. Pleatco's PMA20-F2M spec line does not print FIL11100303..