Foam pin M1 melamine 125x125 cm thickness 45 mm density 11Kg / m3 foam. This considerably improves the absorption of airborne noise. The open cell melamine picks up sound and reduces noise best to improve your sound insulation. Melamine foam used for the manufacture of this product is classified M1 fire. This product is easily cut, but it has still a slight brittleness. Features: Colour: Light gray Thickness: 45mm Density: 11 kg / m3 Format: 125x125 cm Acoustic correction (absorption) of a part or a local music studio, etc. Soundproofing a high temperature resistant Machine Property: Absorption and acoustic correction air tightness, insulation, durability foam Packaging: soundproofing foam comes in a neat package for transport.