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370-0237 spa filter equivalents
Part number 370-0237 appears in 1 cross-reference row 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.
Marquis Spas 5CH-502 cartridge (OEM 20041), 5-3/16" (132 mm) × 12-1/2" (318 mm), 50 sq ft. Unicel 5CH-502, Pleatco PPM50SC-F2M.
Unicel 5CH-502
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| OEM | 20041 |
|---|---|
| Unicel | 5CH-502 |
| Pleatco | PPM50SC-F2M |
| Filbur | FC-0195 |
| Size | 5-3/16" (132 mm) × 12-1/2" (318 mm), 50 sq ft |
Sources
- Unicel 2026 Replacement Guide: OEM cross reference (Marquis Spas section), PDF p.44 (printed p.40); spec table PDF p.10 (printed p.6) (PDF)
- Pleatco 2023 Catalog: Unicel-to-Pleatco cross reference, PDF p.47 (5CH-502 = PPM50SC-F2M); Filbur-to-Pleatco PDF p.48 (FC-0195 = PPM50SC-F2M); spec table PDF p.32 (OEM 20041, 370-0237) (PDF)
- Filbur Catalog & Reference Guide: Product by Pool/Spa Manufacturer (OEM), Marquis Spas, printed p.42 (PDF p.22) (PDF)
- Marquis Spas (manufacturer filter finder): Filter Finder (series, model years, slip-on/threaded, sq ft, part number): 20091 threaded 50 for Signature Series 2000–2021 (web page)
Not in sources: Marquis's 2001 and 2002 owner's manuals name a single #5040 50 sq ft cartridge for all 2000-and-later spas.
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