Flat Panel Pressurized Solar Water Heater 1.OEM is available 2.Quality assurance 3.Health ... SUS 304-2B thickness1.2 mm3.The outer cover: colored steel, thickness 0.5-mm4.The insulating layer: 57mm high-density ... /2.5KW Electric Heating Element , Mg Anode , T&PValve, Sensor,non-return valveFeaturesSpecial-protection inner tank with the quality 5 years ...