All-Metal Body for Maximum Durability Easy DIY QuickDock Top Mount Installation Codes/Standards Applicable: cUPC (UPC&CSA), NSF 61, NSF 372, AB1953, EPA, CALGreen, MASS, FTC, DOE, CEC and ADA Superior Corrosion & Rust-Resistant Finish Kerox Ceramic Cartridge (tested w/ 500,000 cycles)