The Sprite High Output 2 Shower Filter has NSF certified performance in a sleek, high-strength plastic housing. Inside the housing is a replaceable 12 month filter cartridge (model HOC) which contains Sprite's exclusive blend of patented filtration media to remove free chlorine, for softer hair and skin. Original High Output series units have a footprint of approximately 4 inches, making them ideal for achieving maximum point of use filtration. Sprite's “Universal” filters are named for their universal fit and appeal! They can be placed between an existing shower head and any standard 1/2-inch NPT shower arm with no extra equipment, offering complete customization of the showering experience. This listing is for the filter (containing one replaceable filter cartridge) only. To purchase the filter with a matching adjustable shower head, refer to model HO2-CM-M, HO2-WH-M, HO2-BN-M, or HO2-GD-M. Sprite's plastic units have a 1 year manufacturer. Please refer to the manufacturer..