Auralex Acoustics Roominators D 36-DST Charcoal, Acoustic Insulation Elements, Acoustic sound control kit designed for spot treatment (Selective acoustic room treatment), The Roominators D36 acoustic sound control kit reduces unwanted flutter echo in your room, Dimensions per piece: 305 x 305 x 50 mm@+*Set contains*@+@+, 18 x DST-112 Panels (Anthracite), 18 x DST-114 Panels (Anthracite), 2 x Tubetak Pro adhesive