Darlly 77517 Pool Filter Cartridge
Replaces Unicel C-7477 (now C-7483) · Pleatco PA75SV (now ULTRA-A3) · Filbur FC-1260
- Diameter × length
- 7" × 19-5/8"
- Filter area
- 75 sq ft
- End caps
- 3" Open w/ molded gasket / 3" Open w/ molded gasket
- 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 77517 is a 75 sq ft pool filter cartridge, 7" x 19-5/8". It fits the Sta-Rite PRC 75. It replaces Unicel C-7477 (now C-7483), Pleatco PA75SV (now ULTRA-A3) and Filbur FC-1260.
Specifications
| Darlly part number | 77517 |
|---|---|
| Outside diameter | 7" |
| Length | 19-5/8" |
| Top end cap | 3" Open w/ molded gasket |
| Bottom end cap | 3" Open w/ molded gasket |
| Filter area | 75 sq ft |
| Type | Pool |
| Darlly description | Hayward CX570RE, Sta-Rite PRC 75 |
Cross-reference
| Brand | Part numbers Darlly 77517 replaces |
|---|---|
| Unicel | C-7477 (now C-7483) |
| Pleatco | PA75SV (now ULTRA-A3), ULTRA-A3 |
| Filbur | FC-1260 |
| Hurricane (former brand) | HF7477-04 |
Filters it fits
| Filter | Cartridges per filter |
|---|---|
| Sta-Rite PRC 75 (75 sq ft filter) | 1 |
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-7477?
- Darlly 77517 replaces Unicel C-7477, which Unicel now sells as C-7483. Both are 7" in diameter and about 19-5/8" long.
- What Darlly cartridge replaces Pleatco PA75SV?
- Darlly 77517 replaces Pleatco PA75SV, which Pleatco now sells as ULTRA-A3.
- What size is Darlly 77517?
- Darlly 77517 is 7" in outside diameter and 19-5/8" long, with 75 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.