Darlly 60255 Pool Filter Cartridge
Replaces Unicel C-6900 · Filbur FC-1963
- Diameter × length
- 6-1/4" × 32-3/4"
- Filter area
- 25 sq ft
- End caps
- 3" Open w/ molded gasket / 3" Open w/ molded gasket
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 60255 is a 25 sq ft pool filter cartridge, 6-1/4" x 32-3/4". It fits the Pentair Quad D.E. 100, which takes 4 cartridges. It replaces Unicel C-6900, Filbur FC-1963 and Pentair 178656.
Specifications
| Darlly part number | 60255 |
|---|---|
| Outside diameter | 6-1/4" |
| Length | 32-3/4" |
| Top end cap | 3" Open w/ molded gasket |
| Bottom end cap | 3" Open w/ molded gasket |
| Filter area | 25 sq ft |
| Type | Pool |
| Cartridges per filter | 4 |
| Darlly description | Quad DE 100 |
Cross-reference
| Brand | Part numbers Darlly 60255 replaces |
|---|---|
| Unicel | C-6900 |
| Filbur | FC-1963 |
| OEM and other numbers | Pentair 178656 |
Filters it fits
| Filter | Cartridges per filter | OEM cartridge number |
|---|---|---|
| Pentair Quad D.E. 100 (100 sq ft filter) | 4 | 178656 |
Questions
- What is the Darlly replacement for Unicel C-6900?
- Darlly 60255 replaces Unicel C-6900. Both are 6-1/4" in diameter and about 32-3/4" long.
- How many cartridges does the Pentair Quad D.E. 100 use?
- It takes 4 cartridges. Order 4 of Darlly 60255 to replace the full set.
- What size is Darlly 60255?
- Darlly 60255 is 6-1/4" in outside diameter and 32-3/4" 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.