The 20 inch big polypropylene filter housing with iron and manganese reduction water cartridge kit by Tier1 is an all in one prepackaged kit that allows you to assemble a whole home water filtration system from one convenient deal. This kit includes the HFPP-1-PR20 Pentek comparable filter housing, mounting bracket, 20 x 4.5 inch iron and manganese reduction water filter, housing wrench, replacement O-ring, and lubricant packet. This kit provides user convenience since it removes the need to search for individual components and you are assured to receive a fully functional system. The Iron and manganese reducing cartridge fits most standard sized 20 by 4.5 inch filter housings and provides an economic alternative to installing a iron and manganese reducing tank system. The cartridge does not require wasteful backwash cycles and is easy to replace when the time comes. Enjoy cleaner water with less heavy metal contaminants with your Tier1 whole house kit. Let Tier1 be your water experts and protect every drop.