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1561-13 spa filter equivalents
Part number 1561-13 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.
Dimension One Spas 4CH-940 cartridge (OEM 1561-13), 4-5/8" (117 mm) × 15" (381 mm), 40 sq ft. Unicel 4CH-940, Pleatco PDO-UF40P2.
Unicel 4CH-940
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| OEM | 1561-13 |
|---|---|
| Unicel | 4CH-940 |
| Pleatco | PDO-UF40P2 |
| Filbur | FC-0177 |
| Size | 4-5/8" (117 mm) × 15" (381 mm), 40 sq ft |
Sources
- Unicel 2026 Replacement Guide: OEM cross reference (Dimension One Spas section), PDF p.33 (printed p.29); spec table PDF p.7 (printed p.3) (PDF)
- Filbur Catalog & Reference Guide: Product by Pool/Spa Manufacturer (OEM), Dimension One Spas, printed p.33 (PDF p.17) (PDF)
Not in sources: no model/model-year fitment in sources.
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