Polyurethane foam panel with 45kg/m3 density,20mm thinckness,coated on both sides with 80/60 micron thick aluminium foil. The black aluminium foil is embossed on both sides and couple with a 2 g/m2 layer of corrosion-resistant polyester paints.This panel is especially suited for use in air-conditioning and heating system installations.External with Black alu foil,Internal with normal Alu foil.