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The Cal Spas 17 x 8 R is a compatible replacement for the following pool filters:
The Cal Spas Comp. Pool and Spa Filter Cartridge is a pool water filter measuring 8 1/2" x 17 1/2" with 4 1/16" Open top and bottom holes. This pool filter replacement offers 75 square feet of media area with 4 oz. of media weight. This compatible Cal Spas filter replacement ensures premium purification for swimming pool and spa water.