Free cross-reference lookup

Find the right replacement filter the first time

Type in your Pleatco, Unicel, or Filbur part number, your spa model, or your cartridge dimensions. We'll show every interchangeable cartridge so you can compare options on Amazon before you order.

Try: “PRB25-IN”, “Jacuzzi J-365”, “C-4950”

Pleatco Unicel Filbur OEM cross-refs

Browse Hot Tub Filters by Brand

American Whirlpool1 models Artesian3 models Beachcomber1 models Bullfrog5 models Caldera11 models Coleman1 models Dimension One3 models Hot Spring18 models Jacuzzi27 models LA Spas1 models Maax1 models Marquis5 models Master Spas5 models Sundance16 models Vita Spa3 models

How to find your replacement filter

1Find your part number. It's printed on the end cap of your existing cartridge, or on a sticker inside the filter housing lid.
2Search or browse. Type the part number, your spa model, or the cartridge dimensions into the search box above.
3Compare cross-references. The Pleatco, Unicel, and Filbur numbers point at the same physical cartridge, just with different stickers. Generic boxes are often cheaper for the same media.
4Double-check before ordering. Diameter, length, and end-cap style all need to match your housing. A half-inch off in either direction will keep the lid from sealing.