... sandwich panel, 0.3mm color steel sheet and 12kg/m3 polystyrene foam density inside. Heat Insulated coefficient is 0.041w/m.k ... sandwich panel, 0.3mm color steel sheet and 12kg/m3 polystyrene foam density inside. Heat Insulated coefficient is 0.041w/m.k ... is made of 1.5mm steel, 50mm thick EPS insulation foam.12WindowPVC, white color, with dimensions of 1750*950mm, glazed with ...