Longer lasting appliances- whole house carbon filter designed to reduce sediment, chlorine taste and odor from every tap. Universal fit - fits most 10-in x 4.5-in high flow whole house drop in style filter systems from major brands including GE, Culligan, Dupont, Brita, OMNIFilter, Whirlpool and others. Filters down to 5 microns, the lower the micron the more contaminants are caught and reduced; plus reduces chlorine taste and odor. Replace filter every 6 months for best filtration results. Universal 4.5-in replacement filter fits whole house system AO-WH-PREL, Whirlpool WHKF-DWHBB and most major filtration brands. Filter is NSF Certified to Standards 42. Includes 1 replacement sediment filter. Perfect for a household size of 4+ people. Use only certified, genuine replacement filters for continued contaminant removal and system performance.