Darlly 42524 Spa Filter Cartridge
Replaces Unicel 4CH-925 · Pleatco PSANT20P3 · Filbur FC-0127
- Diameter × length
- 4-5/8" × 7-1/4"
- Filter area
- 20 sq ft
- End caps
- semi-circular Handle / 1-1/2" SAE thread
- Per filter
- 1 cartridge
Pool and spa businesses in Florida, Georgia, South Carolina, Alabama, Mississippi, Louisiana and Texas order through their Grit Game rep. Everywhere else, contact Darlly Filtration directly.
Darlly 42524 is a 20 sq ft top-load spa filter cartridge, 4-5/8" x 7-1/4". It replaces Unicel 4CH-925, Pleatco PSANT20P3 and Filbur FC-0127.
Specifications
| Darlly part number | 42524 |
|---|---|
| Outside diameter | 4-5/8" |
| Length | 7-1/4" |
| Top end cap | semi-circular Handle |
| Bottom end cap | 1-1/2" SAE thread |
| Filter area | 20 sq ft |
| Type | Spa |
| Blue antimicrobial version | 42524M |
| Darlly description | top load |
Cross-reference
| Brand | Part numbers Darlly 42524 replaces |
|---|---|
| Unicel | 4CH-925 |
| Pleatco | PSANT20P3 |
| Filbur | FC-0127 |
| Hurricane (former brand) | HF4H925-01 |
Filters it fits
| Filter | Cartridges per filter |
|---|---|
| top load | 1 |
Questions
- What is the Darlly replacement for Unicel 4CH-925?
- Darlly 42524 replaces Unicel 4CH-925. Both are 4-5/8" in diameter and about 7-1/4" long.
- What Darlly cartridge replaces Pleatco PSANT20P3?
- Darlly 42524 replaces Pleatco PSANT20P3.
- What size is Darlly 42524?
- Darlly 42524 is 4-5/8" in outside diameter and 7-1/4" long, with 20 sq ft of filter area.
Cross-reference checked October 21, 2026 against Unicel's 2026 Replacement Guide, Pleatco's catalog (updated September 2025), filbur.com and darllyfilter.com. A competitor number is listed only when that brand's own data pairs it with the same cartridge size. Always compare the size and end caps of your old cartridge before ordering.
Brand names and part numbers are trademarks of their respective owners and are shown only to identify compatible replacements. Darlly Filtration is not affiliated with or endorsed by them. Cross-reference by The Grit Game, Darlly's sales agency.