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.
PTL25P-4 spa filter equivalents
Part number PTL25P-4 appears in 3 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.
Sundance 4CH-30 cartridge (OEM 6540-484), 4-5/8" (117 mm) × 11-7/8" (302 mm), 25 sq ft. Unicel 4CH-30, Pleatco PTL25P-4.
Unicel 4CH-30
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| OEM | 6540-484 |
|---|---|
| Unicel | 4CH-30 |
| Pleatco | PTL25P-4 |
| Filbur | FC-0141 |
| Size | 4-5/8" (117 mm) × 11-7/8" (302 mm), 25 sq ft |
Sources
- Unicel 2026 Replacement Guide: OEM cross reference (Sundance section), PDF p.59 (printed p.55); spec table PDF p.7 (printed p.3) (PDF)
- Filbur Catalog & Reference Guide: Product by Pool/Spa Manufacturer (OEM), Sundance, printed p.51 (PDF p.26) (PDF)
Not in sources: no model/model-year fitment in sources. Checked 2026-11-06: Unicel's spec table and its Freedom Spas line both rate this 4CH-30 at 30 sq ft (158 pleats, 4 oz). This Sundance OEM line (6540-484) and Filbur's Sundance line print 25 sq ft. The 25 sq ft figure stays on this row because it is the Sundance line..
Full details → · All Sundance spa filters · Which fitting you need · How to install it
Dimension One Spas 4CH-30 cartridge (OEM 1561-14), 4-5/8" (117 mm) × 11-7/8" (302 mm), 25 sq ft. Unicel 4CH-30, Pleatco PTL25P-4.
Unicel 4CH-30 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 | 1561-14 |
|---|---|
| Unicel | 4CH-30 |
| Pleatco | PTL25P-4 |
| Filbur | FC-0141 |
| Size | 4-5/8" (117 mm) × 11-7/8" (302 mm), 25 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)
- Hot Tub Outpost (retailer OEM listing): 01561-14: 4-3/4" OD x 11-7/8", handle, 1-1/2" MPT fine thread; 1996 Legend, 1991 and 1993 SRX/Impulse/Duet, 1994–1995 Little Dipper; replaces Unicel 4CH-30, Filbur FC-0141, Pleatco PTL25P-4 (web page)
Full details → · All Dimension One Spas spa filters · Which fitting you need · How to install it
Freedom Spas 4CH-30 cartridge, 4-5/8" (117 mm) × 11-7/8" (302 mm), 30 sq ft. Unicel 4CH-30, Pleatco PTL25P-4.
Unicel 4CH-30 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 | 4CH-30 |
| Pleatco | PTL25P-4 |
| Filbur | FC-0141 |
| Size | 4-5/8" (117 mm) × 11-7/8" (302 mm), 30 sq ft |
Sources
- Unicel 2026 Replacement Guide: Freedom Spas line, PDF p.35 (printed p.31): Franklin, Statesman, Revere = 4CH-30, 30 sq ft, 4 oz; spec table PDF p.7 (printed p.3): 158 pleats, 30 sq ft, molded cone handle, 1-1/2" MPT; Sundance line PDF p.59 (printed p.55): OEM 6540-484 at 25 sq ft (PDF)
- Filbur Catalog & Reference Guide: Dimensional listing PDF p.9: FC-0141 at 30 sq ft. Freedom Spas section PDF p.18 (printed p.35): FC-0141, no Franklin/Statesman/Revere names (PDF)
- Aladdin Equipment: Cartridge 13005, fetched 2026-11-06: model field 4CH-Top Load, Franklin, Statesman, Revere; 30 sq ft; 158 pleats; 4-5/8" x 11-7/8"; cone handle; 1-1/2" male thread; Freedom Spas in the manufacturer list (web page)
Not in sources: Same Unicel number is 25 sq ft on the Sundance OEM line (6540-484) and 30 sq ft here. Franklin and Statesman are also named on 6CH-45. No Freedom OEM number. PTL25P-4 is not in Pleatco's Unicel cross-reference..
Full details → · All Freedom Spas spa filters · Which fitting you need · How to install it