Size: 1/2" Reinforced Inlet/Outlet Connectors | Fits 10"x2.5" Standard Filter Cartridges | Helps Protect Residential Appliances and Home Pluming from Sediment, Rust, Scale, Dirt, Coarse Sand, Sand, Silt, Bad Taste, Odor, Aesthetic and Chlorine Taste (depending on filter cartridge) | Tested by Independent Third-Party to Meet NSF/ANSI Standard | Lifetime support from iSpring in Alpharetta, GA at (678) 261-7611