Free cross-reference lookup

Find the right replacement filter the first time

Type in the number printed on your old filter, your hot tub, pool, or refrigerator model, or a cartridge's dimensions. We'll show every number the same filter is sold under so you can compare options on Amazon before you order.

Try: “PRB25-IN”, “Jacuzzi J-365”, “LT1000P”

Pool & spa cartridges Hot tubs Pools Refrigerators

Browse by Category

Pool & spa cartridges117 cartridges Hot tubs110 models Pools42 models Refrigerators97 models

Browse Hot Tub Filters by Brand

American Whirlpool1 models Artesian3 models Beachcomber1 models Bullfrog5 models Caldera11 models Coleman1 models Dimension One3 models Hot Spot3 models Hot Spring12 models Jacuzzi27 models LA Spas1 models Maax1 models Marquis13 models Master Spas5 models Sundance17 models Tiger River3 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. A refrigerator filter carries its number on the filter body.
2Search or browse. Type the part number, your spa, pool, or refrigerator 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. Refrigerator filters work the same way: LG sells the LT700P under six numbers. Generic boxes are often cheaper for the same media.
4Double-check before ordering. For a cartridge, diameter, length, and end-cap style all need to match your housing. For a refrigerator filter, match your full model number: one letter can change the filter.