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- The EP-20 is a 5 micron carbon block cartridge for extended chlorine reduction life
This fits your .
Pentek EP-20 Water Filter Housings: 155529 Pentek EP-20 filter fits in housings for 20 inch water filters. Fits Culligan / USFilter / Ametek / Pentek 20″ Standard Whole House Water Filter System . . (Package Of 4)