... borosilicate 3.3, thickness: 2.0mm, Three target type.Insulation: rock wool or import PU,hailstone resistance: 25mmbracket: aluminum alloy, thickness: 3 ... alloy with plastic spraying; thickness: 2.0mm;Heat Insulation LayerRock wool, thickness: 55mm, density 120-140kg/m 3Copper Header TubeTU2, thickness ...