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The Pentair 178585 R is a compatible replacement for the following pool filters:
The Pentair 178585 Compatible Replacement Pool Water Filter is a pool filter cartridge that measures 7" x 32 1/16" and has 3" Open top/bottom holes. This pool filter replacement is constructed with 125 sq. ft. of media area for premium pool filtration. This compatible filter replacement keeps swimming pool and spa water cleaner and clearer.
Note: Pentair Models dated after 11/1998 changed in filter length. Verify the length of your pool filter is approximately 32 1/16" to be certain