EQ Acoustics R5 3D Panels Wave Light Smoke, Set of Absorbers, Material: Absorber core made of 100% polyester, Very robust, Non-irritating or allergenic, Odorless, Good efficiency in the medium and high frequency range, Wall and ceiling mounting possible with Flexi system (hook-and-loop fastener compatible for wall mounting), Fire safety standard core material: EN13501-1:2007+A1:2009 [B – s1, d0], Dimensions: 575 x 575 x 50 mm, Weight per piece: 0.8 kg, Colour: Light Smoke, Quantity: 4 pieces, Includes screwless wall fixings