Darlly 30021 Pool Filter Cartridge
Replaces Unicel C-3302 · Pleatco PIN3PAIR (discontinued) · Filbur FC-3751
Darlly 30021 is a 2 sq ft pool filter cartridge, 3-1/8" x 3-11/16". It replaces Unicel C-3302, Pleatco PIN3PAIR (discontinued) and Filbur FC-3751.
Specifications
| Darlly part number | 30021 |
|---|---|
| Outside diameter | 3-1/8" |
| Length | 3-11/16" |
| Top end cap | 1-1/8" Open |
| Bottom end cap | 1-1/8" Open |
| Filter area | 2 sq ft |
| Type | Pool |
| Darlly description | Intex "E" skim filter |
Cross-reference
| Brand | Part numbers Darlly 30021 replaces |
|---|---|
| Unicel | C-3302 |
| Pleatco | PIN3PAIR (discontinued) |
| Filbur | FC-3751 |
Questions
- What is the Darlly replacement for Unicel C-3302?
- Darlly 30021 replaces Unicel C-3302. Both are 3-1/8" in diameter and about 3-11/16" long.
- What Darlly cartridge replaces Pleatco PIN3PAIR?
- Darlly 30021 replaces Pleatco PIN3PAIR.
- What size is Darlly 30021?
- Darlly 30021 is 3-1/8" in outside diameter and 3-11/16" long, with 2 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.