Pentek EP-BB carbon block 5 micron filter cartridge coupled with Pentek Big Blue 10" sump with 1" FNPT in/out for faster flow rates. Provides refreshing purified water at all faucets, refrigerators and beverage dispensers Eliminates taste and odor problems caused by chlorine and chlorine dioxide water treatment chemicals Safeguards you, your family and pets from harmful chlorine disinfectants, industrial leaks, hydrogen sulfide gases and particulate matter that contaminate well and municipal water supplies Recommended for POE residential and commercial applications EPDM O-ring for leak-proof operation Pressure-relief button for easy maintenance Rated for up to 100 psi and 165 F