This Home Master Replacement Whole House Filter Set CsetBB3SmgFeC fits model HMF3SDGFEC removes dirt, rust, sediment, and chemicals like herbicides, pesticides and VOCs, iron, manganese, and hydrogen sulfide contamination up to 3 ppm combined load to virtually eliminate staining, foul tastes and odors, when used as directed, without drawing down water pressure. Includes a powerful combination of genuine Home Master brand multi-gradient sediment (model CFdgd2501-20BB), radial flow iron (model Cfrffe-20BB), and radial flow carbon filters (model CFRFGAC20-20BB), as well as 3 orings with packets of silicone grease. Filter size 20”tall x 4.5” diameter and fit Home Master and Big Blue style housings.