KleenWater Three Cartridge Replacement Set compatible with Whirlpool WHERPF Reverse Osmosis (RO) Filter And Systems Requiring 2.5 X 9.75 Inch Double Open End Cartridges, Made in USA Aqua Pure Compatible Water Filters If the stain is below

If the stain is below the toilet bowl water it is likely iron

Enhanced with KDF media to inhibit scale build-up

5 inch (W) x 20 inch (H)

AP217 cartridge and mounting bracket

KleenWater Three Cartridge Replacement Set compatible with Whirlpool WHERPF Reverse Osmosis (RO) Filter And Systems Requiring 2.5 X 9.75 Inch Double Open End Cartridges, Made in USA Aqua Pure Compatible Water Filters If the stain is belowThis set of two KleenWater carbon block cartridges and one KleenWater 5 micron dirt sediment polypropylene cartridge provides effective pre filtration for both chlorinated (municipal) and private well (non chlorinated) water. The KW2510G 5 micron filter cartridge removes dirt rust and sediment down to 5 microns. The KW2510CB carbon block cartridge will adsorb chlorine chloramine and other harmful chemicals providing superior reverse osmosis membrane