Darlly 81255 Pool Filter Cartridge
Replaces Unicel C-9412 (now C-9410, 100 sq ft) · Pleatco ULTRA-C3 · Filbur FC-0696
- Diameter × length
- 10-1/16" × 23-5/8"
- Filter area
- 125 sq ft
- End caps
- 6" Open / 6" Open
- 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 81255 is a 125 sq ft pool filter cartridge, 10-1/16" x 23-5/8". It fits the Pentair Clean & Clear 125 (CC125) and Predator 125. It replaces Unicel C-9412 (now C-9410, 100 sq ft), Pleatco ULTRA-C3, Filbur FC-0696, Pentair 173200 and Pentair R178671.
Specifications
| Darlly part number | 81255 |
|---|---|
| Outside diameter | 10-1/16" |
| Length | 23-5/8" |
| Top end cap | 6" Open |
| Bottom end cap | 6" Open |
| Filter area | 125 sq ft |
| Type | Pool |
| Darlly description | Predator, Clean and Clear |
Cross-reference
| Brand | Part numbers Darlly 81255 replaces |
|---|---|
| Unicel | C-9412 (now C-9410, 100 sq ft) |
| Pleatco | ULTRA-C3 |
| Filbur | FC-0696 |
| OEM and other numbers | Pentair 173200, Pentair R178671 |
Filters it fits
| Filter | Cartridges per filter | OEM cartridge number |
|---|---|---|
| Pentair Clean & Clear 125 (CC125); Predator 125 (125 sq ft filter) | 1 | 173200, R178671 |
Unicel replaced C-9412 with C-9410, a 100 sq ft cartridge. Darlly's match for C-9410 is 10101, the same size and end caps as 81255.
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-9412?
- Darlly 81255 replaces Unicel C-9412, which Unicel replaced with C-9410, a 100 sq ft cartridge. Both are 10-1/16" in diameter and about 23-5/8" long.
- What Darlly cartridge replaces Pleatco ULTRA-C3?
- Darlly 81255 replaces Pleatco ULTRA-C3.
- What size is Darlly 81255?
- Darlly 81255 is 10-1/16" in outside diameter and 23-5/8" long, with 125 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.