ScaleZERO Replacement Filter for 4.5"x20" Housings
4.5"x20" polyester pleated sediment filter with Siliphos® Scale Inhibitor reduces dirt, sand, rust, sediment and protects equipment against limescale corrosion. For greater dirt-holding capacity, lower pressure drop and greater flow rate. Can be washed and reused up to two times. Used for whole house systems and water heater systems.