The Waterco 62051 R is a compatible replacement for the following spa filter cartridges:
The Waterco Pools 62051 Comp. Replacement Pool Filter is a spa filter cartridge that purifies swimming pool & spa water through the use of 150 sq. ft. of filter area. This compatible Waterco pool filter features 3 1/16" Open top & bottom holes, and measures 7 1/4" x 29 1/2".