Features: - Absorbs midrange and high frequencies - Reduces room reverberation time - 50% absorption at 200 Hz, complete absorption above 500 Hz - For professionals and audiophile rooms - Birch plywood structure, Basotect foam - Can be combined with Hofa Frame range items - Colour: light grey (colour code 47) - Flammable - Dimensions: 500 x 500 x 110 mm - Weight: approx. 3.1 kg