Darlly 91503 Pool Filter Cartridge
Replaces Unicel C-9403 · Pleatco PWW150 (retired) · Filbur FC-2969
- Diameter × length
- 9-15/16" × 25-5/16"
- Filter area
- 150 sq ft
- End caps
- 5-13/16" Open / 6-1/16" Open
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 91503 is a 150 sq ft pool filter cartridge, 9-15/16" x 25-5/16". It replaces Unicel C-9403, Pleatco PWW150 (retired) and Filbur FC-2969.
Specifications
| Darlly part number | 91503 |
|---|---|
| Outside diameter | 9-15/16" |
| Length | 25-5/16" |
| Top end cap | 5-13/16" Open |
| Bottom end cap | 6-1/16" Open |
| Filter area | 150 sq ft |
| Type | Pool |
| Darlly description | Waterway Clearwater, Rec, Warehouse |
Cross-reference
| Brand | Part numbers Darlly 91503 replaces |
|---|---|
| Unicel | C-9403 |
| Pleatco | PWW150 (retired) |
| Filbur | FC-2969 |
Older or other numbers that also point to this cartridge (not confirmed by a second source): PWW150-4 (Pleatco).
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-9403?
- Darlly 91503 replaces Unicel C-9403. Both are 9-15/16" in diameter and about 25-5/16" long.
- What Darlly cartridge replaces Pleatco PWW150?
- Darlly 91503 replaces Pleatco PWW150.
- What size is Darlly 91503?
- Darlly 91503 is 9-15/16" in outside diameter and 25-5/16" long, with 150 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.