Type SOUTYPE 47/1500-20 Dimension LxWxH 1660x1620x150 No of tubes 20 Weight 50.6 kg Area 2.69 m2 Absorber coating SS-AlNx /Cu Flowed through element Copper pipe/Heat pipe Heat pipe condensor diameter 8 mm Transmission of the cover tube > 91% Casing material Aluminium Sealing material Silicon rubber Insulation material Polyurethane and mineral wool Material of glazing Borosilicate glass Thickness of glazing 1.6 mm