7.5625″ × 17.75″ Replacement Filter Cartridges

Every cartridge in our index that measures 7.5625″ across by 17.75″ tall, all 1 of them. Compare brands side by side and cross-reference the Pleatco, Unicel, and Filbur numbers before you order.

One catch: diameter and length are the dimensions that get most of the attention, but end-cap style (open, closed, or with a hole) has to match the housing too. A cartridge that's technically the right size won't seal if the cap is wrong, so check both before you buy. Here's how to measure a cartridge.

Close sizes: 7.5″ × 14.75″ · 7.875″ × 7.1875″ · 8″ × 5.75″ · 8″ × 5.875″ · 8″ × 6.25″ · 7.125″ × 7.5625″ · 7.125″ × 8.0625″ · 7.125″ × 8.75″ · Browse all sizes →