Darlly 50501 Spa Filter Cartridge
Replaces Unicel 5CH-502 · Pleatco PPM50SC-F2M · Filbur FC-0195
- Diameter × length
- 5-3/16" × 12-1/2"
- Filter area
- 50 sq ft
- End caps
- bar Handle / 2" male thread/MPT
- 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 50501 is a 50 sq ft spa filter cartridge, 5-3/16" x 12-1/2". It fits the Marquis 50 (new style) and Cal Spas low-flow recirc. It replaces Unicel 5CH-502, Pleatco PPM50SC-F2M, Filbur FC-0195, Marquis Spas 20041 and Marquis Spas 370-0237.
Specifications
| Darlly part number | 50501 |
|---|---|
| Outside diameter | 5-3/16" |
| Length | 12-1/2" |
| Top end cap | bar Handle |
| Bottom end cap | 2" male thread/MPT |
| Filter area | 50 sq ft |
| Type | Spa |
| Blue antimicrobial version | 50501M |
| Darlly description | Marquis Spas (new style), Cal Spas |
Cross-reference
| Brand | Part numbers Darlly 50501 replaces |
|---|---|
| Unicel | 5CH-502 |
| Pleatco | PPM50SC-F2M |
| Filbur | FC-0195 |
| Hurricane (former brand) | HF5H502-01 |
| OEM and other numbers | Marquis Spas 20041, Marquis Spas 370-0237, Cal Spas FIL11100202 |
Older or other numbers that also point to this cartridge (not confirmed by a second source): PPM50-SC (Pleatco).
Filters it fits
| Filter | Cartridges per filter | OEM cartridge number |
|---|---|---|
| Marquis 50 (new style); Cal Spas low-flow recirc (50 sq ft filter) | 1 | 20041, 370-0237, FIL11100202 |
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 5CH-502?
- Darlly 50501 replaces Unicel 5CH-502. Both are 5-3/16" in diameter and about 12-1/2" long.
- What Darlly cartridge replaces Pleatco PPM50SC-F2M?
- Darlly 50501 replaces Pleatco PPM50SC-F2M.
- What size is Darlly 50501?
- Darlly 50501 is 5-3/16" in outside diameter and 12-1/2" long, with 50 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.