Marquis 370-0216 Filter Cartridge
Marquis OEM number • 60 sq ft • 5.1875″ OD × 19.625″ long
370-0216 is Marquis's number for this cartridge, not a part you have to buy from Marquis. The filter itself is a 60 square foot cartridge measuring 5.1875 inches across and 19.625 inches long, and Pleatco, Unicel, and Filbur all build it. If you read 370-0216 off an old cartridge or found it in your manual, any of the numbers below drops into the same housing.
Marquis also lists 20043 against this cartridge. Different numbers on paper, same filter in the box.
Fitment notes
Closed top, 1-5/8 inch bottom opening. The largest of the Pacific Marquis closed-top cartridges. Cross-reference warning: Pleatco's 2008 catalog gives the Unicel equivalent as C-5435, a number Unicel does not publish. Unicel's part for this cartridge is the C-5434, matching on all of diameter, length, closed top and application, and Unicel reaches it from Marquis OEM 20043 and 370-0216. Unicel rates the C-5434 at 58 sq ft in its spec tables and 60 in its OEM tables.
What to buy instead
Replacements for the Marquis 370-0216
Each button searches Amazon for one of the numbers this cartridge is sold under. The OEM version is usually the most expensive of the set and the aftermarket versions are the same physical filter, so it is worth checking all of them before you order.
Every number for this filter
| Brand | Part Number | Type |
|---|---|---|
| Marquis | 370-0216 | The number you searched |
| Pleatco | PPM60 | Aftermarket equivalent |
| Unicel | C-5434 | Aftermarket equivalent |
| Filbur | FC-3634 | Aftermarket equivalent |
| Marquis | 20043 | Other OEM number |
Full specs, the cartridge diagram, and the complete compatibility list live on the PPM60 cartridge page. You can also see every 5.1875″ × 19.625″ cartridge if you are checking a measurement rather than a part number.
Frequently Asked Questions
What filter replaces the Marquis 370-0216?
The PPM60 replaces it directly, and so does every cross-reference for it: C-5434, FC-3634. All of them are the same 60 sq ft cartridge at 5.1875" outer diameter and 19.625" long. Buy whichever is cheapest at the time with solid recent reviews. The same cartridge also shows up as Marquis 20043, so those are not different filters either.
Is the Marquis 370-0216 the same as the PPM60?
Yes, physically the same filter. Marquis 370-0216 is an OEM number, meaning it is the code Marquis put on the cartridge that shipped with the equipment. Marquis does not manufacture cartridges. Pleatco, Unicel, and Filbur do, and they sell the identical part under their own numbers at a lower price. Match the dimensions against your old cartridge before ordering and you are covered.
Do I have to buy the Marquis version?
No. Nothing about the housing requires an OEM-branded cartridge, and the warranty on your equipment is not voided by using an aftermarket filter that meets the same spec. The reason to buy OEM is convenience, not performance. The reason not to is price, which is often a meaningful gap for an identical part. What matters is that outer diameter, length, and end-cap style all match.
What size is the Marquis 370-0216?
5.1875 inches in outer diameter, 19.625 inches long, with 60 square feet of filter media. Both measurements need to land within about an eighth of an inch, and the end caps have to match so the cartridge seats correctly when you close the lid. Measure your old one rather than trusting a number that has worn off the label.
Last verified August 2026