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.
PMA20-F2M spa filter equivalents
Part number PMA20-F2M appears in 3 cross-reference rows below. Each row lists the OEM, Unicel and Pleatco numbers that the source documents treat as interchangeable, plus the cartridge size so you can confirm against your old filter.
The same numbers, on one page, are in the cross-reference lookup. A schedule for this part number, and the buy link, are on the replacement schedule and reorder page. Published intervals by brand are in the replace and clean calculator.
Cal Spas 4CH-252 cartridge (OEM FIL11100303), 4-5/8" (117 mm) × 8" (203 mm), 25 sq ft. Unicel 4CH-252, Pleatco PMA20-F2M.
Pleatco PMA20-F2M
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| OEM | FIL11100303 |
|---|---|
| Unicel | 4CH-252 |
| Pleatco | PMA20-F2M |
| Filbur | not listed |
| Size | 4-5/8" (117 mm) × 8" (203 mm), 25 sq ft |
Sources
- Unicel 2026 Replacement Guide: OEM cross reference (Cal Spas section), PDF p.30 (printed p.26); spec table PDF p.7 (printed p.3) (PDF)
- Pleatco 2023 Catalog: Unicel-to-Pleatco cross reference, PDF p.47 (PDF)
Not in sources: no Filbur equivalent found in Filbur catalog; no model/model-year fitment in sources.
Full details → · All Cal Spas spa filters · Which fitting you need · How to install it
Master Spas 4CH-252 cartridge (OEM X268521), 4-5/8" (117 mm) × 8" (203 mm), 25 sq ft. Unicel 4CH-252, Pleatco PMA20-F2M.
Pleatco PMA20-F2M 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.
| OEM | X268521 |
|---|---|
| Unicel | 4CH-252 |
| Pleatco | PMA20-F2M |
| Filbur | not listed |
| Size | 4-5/8" (117 mm) × 8" (203 mm), 25 sq ft |
Sources
- Unicel 2026 Replacement Guide: OEM cross reference (Master Spas section), PDF p.45 (printed p.41); spec table PDF p.7 (printed p.3) (PDF)
- Pleatco 2023 Catalog: Unicel-to-Pleatco cross reference, PDF p.47 (PDF)
Not in sources: no Filbur equivalent found in Filbur catalog.
Full details → · All Master Spas spa filters · Which fitting you need · How to install it
Coleman Spas 4CH-252 cartridge (OEM FIL11100303), 4-5/8" (117 mm) × 8" (203 mm), 25 sq ft. Unicel 4CH-252, Pleatco PMA20-F2M.
Pleatco PMA20-F2M 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.
| OEM | FIL11100303 |
|---|---|
| Unicel | 4CH-252 |
| Pleatco | PMA20-F2M |
| Filbur | not listed |
| Size | 4-5/8" (117 mm) × 8" (203 mm), 25 sq ft |
Sources
- Unicel 2026 Replacement Guide: 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. (PDF)
- Pleatco 2023 Catalog: Unicel cross-reference PDF p.47: 4CH-252 = PMA20-F2M (PDF)
Not in sources: No Filbur row in the Coleman section. No Coleman model name. Pleatco's PMA20-F2M spec line does not print FIL11100303..
Full details → · All Coleman Spas spa filters · Which fitting you need · How to install it