Galvanized steel cabinet. Chiller is air cooled and is designed for remote installation. Stainless steel storage tank. May be used to supply up to two drinking fountains. 1/4" OD stainless steel water tube connections. Compressor is hermetically sealed, reciprocating type, single phase, lifetime lubrication. The condenser is cooled with a permanently lubricated fan motor. Stainless steel cooling tank with continuous copper tubing. Factory preset thermostat, (adjustable to compensate for altitude requirements). R134a refrigerant. Product Certified to NSF/ANSI Standard 61, Annex G (weighted average lead content of <=0.25%) and is in compliance with California's Health & Safety Code Section 116875 (commonly known as AB1953). Models covered by this specification comply with all known Plumbing Codes. Listed by Underwriters’ Laboratories to U.S. and Canadian standards. 12 gph commercial grade chiller.