... , 304-2B(food-level stainless steel)Material of outer water tank: 0.31mm, 0.4mm, 0.5mm stainless steel,or colorful armor plate, ... /ALN-SS/CUBracket: 1.2mm/ 1.5mm thickness stainless steel or galvanized steel plate or alumminum alloy.Angle of bracket: 25°, ... 38°, 45°Reflector: stainless steel sheet or stripDaily efficiency: above50%Optional electrical heater: 1. ...