- Size and fit: 7 1/2 inch diameter, 14 3/4 inch length. - End cap configuration: top castle end cap with 0 inch inner diameter; bottom end cap open with 2 5/8 inch inner diameter. - Pleats and media: 164 pleats; filter media is 3-ounce reemay 2033; filter area 65 square feet. - Performance benefits: provides more efficient filtration and better water clarity with these filters. - Compatibility notes: designed for filter housings that accept a cartridge of this size and end-cap configuration (7 1/2 in dia, 14 3/4 in long; top castle cap 0 in ID; bottom open cap 2 5/8 in ID). - Use scenarios: 1) Replacing a worn cartridge in residential pool filtration to restore clear water in both in-ground and above-ground pools. 2) Upgrading filtration efficiency during peak swimming season to maintain sparkling water with higher debris loads. 3) Routine maintenance for high-use pools where increased surface area and strong media help reduce backwashing and chemical demand.