7.125″ × 8.75″ Replacement Filter Cartridges

Every cartridge in our index that measures 7.125″ across by 8.75″ tall, all 2 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: 7.125″ × 7.5625″ · 7.125″ × 8.0625″ · 7.125″ × 10.5″ · 7.125″ × 14.875″ · 7.125″ × 26.9375″ · 7.0625″ × 9.875″ · 7.0625″ × 14.8125″ · 7″ × 6.5″ · Browse all sizes →