Darlly 50257 Spa Filter Cartridge
Replaces Unicel C-5601 · Pleatco PJW23 · Filbur FC-1330
- Diameter × length
- 5-11/16" × 10-3/8"
- Filter area
- 25 sq ft
- End caps
- Closed w/ string loop / 2-1/8" Open
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 50257 is a 25 sq ft spa filter cartridge, 5-11/16" x 10-3/8". It replaces Unicel C-5601, Pleatco PJW23 and Filbur FC-1330.
Specifications
| Darlly part number | 50257 |
|---|---|
| Outside diameter | 5-11/16" |
| Length | 10-3/8" |
| Top end cap | Closed w/ string loop |
| Bottom end cap | 2-1/8" Open |
| Filter area | 25 sq ft |
| Type | Spa |
| Darlly description | Jacuzzi Whirlpool Bath (front load) |
Cross-reference
| Brand | Part numbers Darlly 50257 replaces |
|---|---|
| Unicel | C-5601 |
| Pleatco | PJW23 |
| Filbur | FC-1330 |
| Hurricane (former brand) | HF5601-01 |
Other Darlly cartridges the same size
Same diameter and length. Check the end caps and area before swapping.
Questions
- What is the Darlly replacement for Unicel C-5601?
- Darlly 50257 replaces Unicel C-5601. Both are 5-11/16" in diameter and about 10-3/8" long.
- What Darlly cartridge replaces Pleatco PJW23?
- Darlly 50257 replaces Pleatco PJW23.
- What size is Darlly 50257?
- Darlly 50257 is 5-11/16" in outside diameter and 10-3/8" long, with 25 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.