The Pentek 255547-43 water filter cartridge features the following filter media:
The Pentek GS-6EXTRA.25-B-1/4" FPT Inline Filter is a replacement inline filter cartridge constructed with bacteriostatic KDF and coconut shell carbon. This coconut shell carbon filter effectively reduces the taste and odor of chlorine in your drinking water. This inline bacteriostatic cartridge also features a 5 micron rating for the reduction of waterborne contaminants. This 5 micron filter is constructed with a durable molded polypropylene body and cap.
Pentek GS-6EXTRA.25-B-1/4" FPT Inline Filter specifications: