Darlly 20151 Spa Filter Cartridge
Replaces Unicel C-2302 · Pleatco PRB14.5 (discontinued) · Filbur FC-2320
- Diameter × length
- 2-7/8" × 17-1/16"
- Filter area
- 14.5 sq ft
- End caps
- 1-1/16" Open / 1-1/16" 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 20151 is a 14.5 sq ft spa filter cartridge, 2-7/8" x 17-1/16". It fits the Rainbow-Hi Flow. It replaces Unicel C-2302, Pleatco PRB14.5 (discontinued) and Filbur FC-2320.
Specifications
| Darlly part number | 20151 |
|---|---|
| Outside diameter | 2-7/8" |
| Length | 17-1/16" |
| Top end cap | 1-1/16" Open |
| Bottom end cap | 1-1/16" Open |
| Filter area | 14.5 sq ft |
| Type | Spa |
| Blue antimicrobial version | 20151M |
| Darlly description | Rainbow-Hi Flow |
Cross-reference
| Brand | Part numbers Darlly 20151 replaces |
|---|---|
| Unicel | C-2302 |
| Pleatco | PRB14.5 (discontinued) |
| Filbur | FC-2320 |
Filters it fits
| Filter | Cartridges per filter |
|---|---|
| Rainbow-Hi Flow | 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-2302?
- Darlly 20151 replaces Unicel C-2302. Both are 2-7/8" in diameter and about 17-1/16" long.
- What Darlly cartridge replaces Pleatco PRB14.5?
- Darlly 20151 replaces Pleatco PRB14.5.
- What size is Darlly 20151?
- Darlly 20151 is 2-7/8" in outside diameter and 17-1/16" long, with 14.5 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.