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.
6CH-45 spa filter equivalents
Part number 6CH-45 appears in 2 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.
Master Spas 6CH-45 cartridge, 6" (152 mm) × 12-3/8" (314 mm), 45 sq ft. Unicel 6CH-45, Pleatco PTL45W-P-4.
Unicel 6CH-45
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| OEM | |
|---|---|
| Unicel | 6CH-45 |
| Pleatco | PTL45W-P-4 |
| Filbur | FC-0330 |
| Size | 6" (152 mm) × 12-3/8" (314 mm), 45 sq ft |
Sources
- Unicel 2026 Replacement Guide: OEM cross reference (Master Spas section), PDF p.45 (printed p.41); spec table PDF p.12 (printed p.8) (PDF)
- Filbur Catalog & Reference Guide: Product by Pool/Spa Manufacturer (OEM), Master Spas, printed p.43 (PDF p.22) (PDF)
Not in sources: no model/model-year fitment in sources; Unicel lists no OEM part number for this brand entry. Checked 2026-11-06: Filbur's size table and Freedom Spas section print FC-0330 / 6CH-45 at 6 x 12-1/4 in, against Unicel's 12-3/8 in kept on this row. Freedom model names are on the Freedom Spas fitment page..
Full details → · All Master Spas spa filters · Which fitting you need · How to install it
Freedom Spas 6CH-45 cartridge, 6" (152 mm) × 12-3/8" (314 mm), 45 sq ft. Unicel 6CH-45, Pleatco PTL45W-P-4.
Unicel 6CH-45 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 | |
|---|---|
| Unicel | 6CH-45 |
| Pleatco | PTL45W-P-4 |
| Filbur | FC-0330 |
| Size | 6" (152 mm) × 12-3/8" (314 mm), 45 sq ft |
Sources
- Unicel 2026 Replacement Guide: Freedom Spas line, PDF p.35 (printed p.31): Statesman, Lexington, Enterprise, Aristocrat, Franklin = 6CH-45, 6" x 12-3/8", 45 sq ft; spec table PDF p.12 (printed p.8): 158 pleats, 3 oz, semi-circular handle, 1-1/2" MPT (PDF)
- Filbur Catalog & Reference Guide: Dimensional listing PDF p.10 and Freedom Spas section PDF p.18 (printed p.35): FC-0330 at 6" x 12-1/4", 45 sq ft, PTL45W-P-4 (PDF)
- Aladdin Equipment: Cartridge 14506, fetched 2026-11-06: model field Statesman/Lexington/Enterprise/Aristocrat/Franklin; 45 sq ft; 158 pleats; 6" x 12-3/8"; Freedom Spas and Master Spas (web page)
Not in sources: Length 12-3/8" (Unicel, Aladdin) vs 12-1/4" (Filbur). Franklin and Statesman are also on the 4CH-30 row. No Freedom OEM number. PTL45W-P-4 is Filbur's Pleatco cell..
Full details → · All Freedom Spas spa filters · Which fitting you need · How to install it