EQ Acoustics R5 Acoustic Panel Purple, Absorber, Material: Absorber core made of 100% polyester, Very robust, Non-irritating or allergenic, Odorless, Good acoustic performance 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: Purple, Quantity: 4 panels, Includes screwless wall fixings