Big Boy Replacement KDF/85 Carbon Filter

Product Highlights This is the replacement KDF85 catalytic carbon filter for the Hydrologic Big Boy. This carbon filter needs to be replaced every 50,000 gallons of use to maintain effectiveness in the reduction of chlorine. About This Item Big Boy Replacement KDF/85 Carbon Filter: Reduces up to 99% of chlorine, sulfur, iron, heavy metals, rust and silt Rated at 7 GPM (gallons per minute) Granular Activated Catalytic Carbon KDF85 media Opaque cartridge Dimensions (H x W): 20″ x 4.5″ Weight: 7 lbs