Darlly 70253 Filter Cartridge
Replaces Unicel C-7604 (now C-7404, 35 sq ft)
- Diameter × length
- 7" × 9-13/16"
- Filter area
- 25 sq ft
- End caps
- injection molded knob Handle / injection molded cone adapter
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 70253 is a 25 sq ft filter cartridge, 7" x 9-13/16". It replaces Unicel C-7604 (now C-7404, 35 sq ft).
Specifications
| Darlly part number | 70253 |
|---|---|
| Outside diameter | 7" |
| Length | 9-13/16" |
| Top end cap | injection molded knob Handle |
| Bottom end cap | injection molded cone adapter |
| Filter area | 25 sq ft |
| Darlly description | Baker-Hydro HM-25 |
Cross-reference
| Brand | Part numbers Darlly 70253 replaces |
|---|---|
| Unicel | C-7604 (now C-7404, 35 sq ft) |
Older or other numbers that also point to this cartridge (not confirmed by a second source): PBH-25 (Pleatco), FC-0710 (Filbur).
Unicel replaced C-7604 with C-7404, a 35 sq ft cartridge. Darlly's match for C-7404 is 70351, the same size and end caps as 70253.
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-7604?
- Darlly 70253 replaces Unicel C-7604, which Unicel replaced with C-7404, a 35 sq ft cartridge. Both are 7" in diameter and about 9-13/16" long.
- What size is Darlly 70253?
- Darlly 70253 is 7" in outside diameter and 9-13/16" 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.