Hofa Basstrap Anthracite, Broadband Absorber Tube, Effective down into the bass range, Effective in fighting rumbling bass and standing waves, For recording / control rooms and audiophile applications, Filling: Stone wool, Outer material: Textile, Top / Bottom plate made of plywood, Stackable and transportable, Can be used as a speaker stand or acoustic partition, Maximum load capacity: 35 kg, Dimensions (H x Ø): 103 x 43 cm, Weight: approx. 14.5 kg, Colour: Anthracite