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817-0012 spa filter equivalents
Part number 817-0012 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.
Waterway Plastics 6CH-942 cartridge (OEM 817-0012), 6" (152 mm) × 8-1/4" (210 mm), 45 sq ft. Unicel 6CH-942, Pleatco not listed.
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| OEM | 817-0012 |
|---|---|
| Unicel | 6CH-942 |
| Pleatco | not listed |
| Filbur | FC-0361 |
| Size | 6" (152 mm) × 8-1/4" (210 mm), 45 sq ft |
Sources
- Unicel 2026 Replacement Guide: Waterway list PDF p.64: 817-0012 = 6CH-942, 1-1/2" SAE, stacked with 817-0011. Spec table PDF p.12: 45 sq ft, 1-3/4" open top, must be used with 6CH-941. (PDF)
- Waterway Plastics Service Logic cartridge table: Fetched 2026-11-09: 817-0012, 50 sq ft lower cartridge (extension) (web page)
- Pleatco 2023 Catalog: PWW100P3-SET spec, PDF p.33, includes OEM 817-0012 (PDF)
- Filbur Catalog & Reference Guide: Waterway section PDF p.28: FC-0361, OEM 817-0012, 6CH-942 (PDF)
Not in sources: Same area split as 817-0011: 50, 45, or 40 per cartridge, and 80 in Filbur's Waterway column. The Pleatco set is 100 sq ft for both cartridges together..
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