EQ Acoustics Classic Wedge 30 Tile grey, Absorber Tiles, Set of 16, Acoustic foam tiles improve room acoustics absorbing middle and high frequency sound waves, Ideal for recording studio, vocal booth, home cinema, office etc., Noise Reduction Coefficient (NRC): 0.85, Dimensions (one tile) L x W x H: 300 x 300 x 50 mm, Colour: Grey, Includes set of 16 pieces, Incl. Tile Tabs adhesive strips for fastening