F4AK 6-Month Prefilter and Alkaline Replacement Supply Filter Cartridge
Item model number F4AK. Part Number F4AK. Standard sized 10" x 2.5" Prefilters. 1/4" quick connect fittings on the Alkaline filter. Fits iSpring RCC7AK, RCC7P-AK, and most other RO systems that use standard sized filter housings.