Darlly 50403 Spa Filter Cartridge
Replaces Unicel 5CH-402 · Pleatco PJW40SC-F2M (discontinued)
Darlly 50403 is a 40 sq ft spa filter cartridge, 5-3/16" x 10-3/4". It fits some Del Sol spas. Check that your old cartridge is the same size, with the same end caps, before ordering. It replaces Unicel 5CH-402 and Pleatco PJW40SC-F2M (discontinued).
Specifications
| Darlly part number | 50403 |
|---|---|
| Outside diameter | 5-3/16" |
| Length | 10-3/4" |
| Top end cap | bar Handle |
| Bottom end cap | 2" male thread/MPT |
| Filter area | 40 sq ft |
| Type | Spa |
| Blue antimicrobial version | 50403M |
| Darlly description | Del Sol Spas |
Cross-reference
| Brand | Part numbers Darlly 50403 replaces |
|---|---|
| Unicel | 5CH-402 |
| Pleatco | PJW40SC-F2M (discontinued) |
| Filbur | FC-2811 (original 5-1/2" x 11" size) |
| Hurricane (former brand) | HF5H402-01 |
Filters it fits
| Filter | Cartridges per filter |
|---|---|
| Del Sol Spas | 1 |
Questions
- What is the Darlly replacement for Unicel 5CH-402?
- Darlly 50403 replaces Unicel 5CH-402. Both are 5-3/16" in diameter and about 10-3/4" long.
- What Darlly cartridge replaces Pleatco PJW40SC-F2M?
- Darlly 50403 replaces Pleatco PJW40SC-F2M.
- What size is Darlly 50403?
- Darlly 50403 is 5-3/16" in outside diameter and 10-3/4" long, with 40 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.