PPM50SC-F2M / 5CH-502 / FC-0195 / Marquis 20041 / Marquis 20091 / Marquis 370-0237
50 sq ft replacement filter cartridge • 5.25″ OD × 12.1875″ long
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PPM50SC-F2M replacements on Amazon
The buttons below pull up Amazon results for each cross-reference part number. Same physical cartridge, different stickers, often different prices. Cross-shop and pick the cheapest option that has solid recent reviews.
Cross-Reference & Interchangeable Part Numbers
| Brand | Part Number | Type |
|---|---|---|
| Pleatco | PPM50SC-F2M | Primary |
| Unicel | 5CH-502 | Equivalent |
| Filbur | FC-0195 | Equivalent |
| OEM | Marquis 20041 | Original Equipment |
| OEM | Marquis 20091 | Original Equipment |
| OEM | Marquis 370-0237 | Original Equipment |
Always verify dimensions and end-cap type before purchasing a replacement.
Compatible Hot Tubs & Spas
The PPM50SC-F2M (or any of its cross-references) fits these spa models. Cartridge sizing occasionally shifted between model years, so it's worth confirming against your owner's manual or the cartridge label.
| Brand | Model |
|---|---|
| Marquis | Signature |
Frequently Asked Questions
What are the dimensions of the PPM50SC-F2M?
The PPM50SC-F2M is 5.25 inches in outer diameter, 12.1875 inches long, with a handle top and a threaded bottom. Total filtration area is 50 square feet. Before ordering, pull your existing cartridge and measure it yourself, or check the label inside the housing. OD and length both have to match within about an eighth of an inch, and the end-cap style needs to match exactly so the cartridge seats properly when the lid closes.
What other part numbers are interchangeable with the PPM50SC-F2M?
PPM50SC-F2M is the same physical cartridge as 5CH-502, FC-0195, plus OEM versions like Marquis 20041, Marquis 20091, Marquis 370-0237. Same dimensions (5.25" × 12.1875"), same handle top, same threaded bottom. The Pleatco, Unicel, and Filbur boxes ship the same media inside, just with different stickers. The only thing to watch is the end-cap style: if a cross-reference has a slightly different cap design, it may not seat right in your housing.
Is the Marquis 20041 the same filter as the PPM50SC-F2M?
Yes. Marquis 20041 is an OEM number, the code the tub or pool builder stamps on the cartridge they ship. The filter itself is made by Pleatco, Unicel, or Filbur, so Marquis 20041 (along with Marquis 20091, Marquis 370-0237) and PPM50SC-F2M, 5CH-502, FC-0195 all point to one interchangeable cartridge. Buy whichever is cheapest with solid recent reviews, and just check that the dimensions match your old cartridge before you order.
How often should I replace the PPM50SC-F2M?
Mid-size spa cartridges like the PPM50SC-F2M (50 sq ft) usually last 12 to 24 months. It shows up most often in Marquis tubs. The real driver is use: a tub that gets daily soaks for a couple of people burns through cartridges about twice as fast as one used a few times a month. A good rhythm is a monthly hose rinse, a deep soak in cleaner at every water change (every three to four months), and replacement once the pleats tear, the seams stain brown, or a soak no longer brings post-clean pressure back to baseline.
How do I clean the PPM50SC-F2M?
The PPM50SC-F2M has a built-in handle on top, which means you can pull it without touching the media. Pull the cartridge from the housing and hose it down. Hit the pleats from above at about a 45-degree angle so water rinses debris out instead of packing it deeper, and work top to bottom while rotating the cartridge. Skip the pressure washer. The high pressure tears or collapses pleats, and once that happens you've lost media that doesn't come back. Every few months (or at every water change, whichever comes first), do a deep clean: overnight soak in a hot tub filter cleaner, then a thorough rinse. If your cartridge has a closed end cap, let it dry before reinstalling so you don't trap moisture inside the cartridge core.
Which hot tubs and spas use the PPM50SC-F2M?
The PPM50SC-F2M is compatible with: Marquis Signature. Confirm against your owner's manual or the label inside the filter compartment, since some brands changed cartridge sizing between model years.
Dimensions
Specifications
| Outer Diameter | 5.25″ |
|---|---|
| Length | 12.1875″ |
| Top Type | Handle |
| Bottom Type | Threaded fitting |
| Filtration Area | 50 sq ft |
| Primary Brand | Pleatco |
| Part Number | PPM50SC-F2M |
Fitment notes
Bar handle top with a 2 inch male threaded bottom fitting (Pleatco's F2M adapter). The 50 sq ft member of the new-design Marquis pair: the PPM35SC-F2M is the same 12-1/2 inch body at 35 sq ft. Marquis's own filter chart puts the 2000-2021 Signature Series on part 20091, which Unicel resolves to this cartridge, and lists the 35 as the alternative for the same tubs, so read the rating off your old cartridge. Unicel notes its 5CH-502 was formerly numbered C-5303, and that the same cartridge fits some Cal Spas models. Replaces Marquis OEM 20041, 20091 and 370-0237.