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1561-01 spa filter equivalents
Part number 1561-01 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 C-7335 cartridge (OEM 1561-01), 7-1/8" (181 mm) × 5-7/8" (149 mm), 35 sq ft. Unicel C-7335, Pleatco not listed.
Unicel C-7335
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| OEM | 1561-01 |
|---|---|
| Unicel | C-7335 |
| Pleatco | not listed |
| Filbur | FC-3058 |
| Size | 7-1/8" (181 mm) × 5-7/8" (149 mm), 35 sq ft |
Sources
- Unicel 2026 Replacement Guide: OEM cross reference (Dimension One Spas section), PDF p.34 (printed p.30); spec table PDF p.18 (printed p.14) (PDF)
- Filbur Catalog & Reference Guide: Product by Pool/Spa Manufacturer (OEM), Dimension One Spas, printed p.33 (PDF p.17) (PDF)
- Leisure Time Inc. (spa dealer listing): Unicel C-7335 product page (fetched 2026-11-03): replaces Dimension One Spas OEM 1561-01 (SpaBerry); 7-1/8" x 5-7/8", closed top w/ Y stand-offs, 2" open twist-lock bottom, 207 pleats, 3 oz, 35 sq ft; Filbur FC-3058 (web page)
- Enjoy Spa Pool (retailer listing): Filter cartridge 35 sq ft Dimension One (C-7335), fetched 2026-11-03: Spa Berry; 7-1/8" x 5-7/8"; closed top; 2" open twist-lock bottom; 35 sq ft; 3 oz; OEM 1561-01; Unicel C-7335; Filbur FC-3058 (web page)
Not in sources: no Pleatco equivalent; Filbur length 5-1/8" vs 5-7/8" (Unicel and two retailers); no Dimension One document found giving 1561-01; no model-year fitment beyond SpaBerry in sources. Promoted 2026-11-03: OEM 1561-01 from two retailer listings that agree with Unicel's size, fittings and area.
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