... : inner tankSUS 304-2B stainless steel, 0.41mm thicknessinner tank diameter310mm, 360mmouter tankSUS 304-2B stainless steel, 0.30mm thicknessOuter tank diameter420mm, 460mm,470mmCapacity120L, 150L ... slope roofAngle of bracket28 30 45 degreeScrew for bracketSUS 202 stainless steel 8mm diameterSealHigh quality silicone rubber polymer Stainless steel solar water heater with assitant tank