... hot. The highest temperature of water tank can be 95 degree Celsius, During this process, this system doesn't need any ... ~60 mm polyurethane foam.5. Stand angle: 15 degree, 20 degree, 25 degree, 30 degree, 38 degree, 45 degree.ModelAll glass solar vacuum tubeWater tankQtyDiameterLengthInner DiameterOuter DiameterCapacityDENO1500 ...