The CMP 817-0010 R is a compatible replacement for the following pool filters:
The Custom Molded Products 817-0010 Comp. Pool Filter is a pool filter replacement that measures 4 1/4" x 4" with 10 square feet of media area. This compatible Custom Molded Products filter has a 1 15/16" Open top style and 1 9/10" Open bottom style with Slots. This spa filter cartridge ensures proper purification of your pool/spa.