High-quality 4-layer multi-component insulation material Size: 0.5mx 0.3m, Thickness (total): 5.50mm Butyl: 1.2 mm, polyurethane foam: 2.8 mm, butyl: 1.5 mm, textile covering: 0.05 mm, Weight per 1 m²: 4.5 kg Package contents: 8x 0.5 mx 0.3 m = 1.20 m². Suitable for: