Darlly 71009 Pool Filter Cartridge
Replaces Unicel C-7655
- Diameter × length
- 7-1/2" × 9-5/8"
- Filter area
- 55 sq ft
- End caps
- 3-1/2" female thread/FPT / 2-5/8" 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 71009 is a 55 sq ft pool filter cartridge, 7-1/2" x 9-5/8". It replaces Unicel C-7655.
Specifications
| Darlly part number | 71009 |
|---|---|
| Outside diameter | 7-1/2" |
| Length | 9-5/8" |
| Top end cap | 3-1/2" female thread/FPT |
| Bottom end cap | 2-5/8" Open |
| Filter area | 55 sq ft |
| Type | Pool |
| Darlly description | Harmsco SC/TC 55 |
Cross-reference
| Brand | Part numbers Darlly 71009 replaces |
|---|---|
| Unicel | C-7655 |
Older or other numbers that also point to this cartridge (not confirmed by a second source): PH50/55 (Pleatco), FC-6105 (Filbur).
Questions
- What is the Darlly replacement for Unicel C-7655?
- Darlly 71009 replaces Unicel C-7655. Both are 7-1/2" in diameter and about 9-5/8" long.
- What size is Darlly 71009?
- Darlly 71009 is 7-1/2" in outside diameter and 9-5/8" long, with 55 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.