Hofa Absorber Eco Black, Acoustic Element, For Mid and High frequencies, High efficiency: at 200 Hz about 50% absorption, Complete absorption above 500 Hz, Effective acoustic element for the room sound optimization, For best possible room acoustics such as in recording studios, home theaters or home recording, Acoustic material: Basotect acoustic foam, Black fabric, Low inflammability, Can be combined with HOFA Exchange Frame for flexible room acoustics, Dimensions: 500 x 500 x 100 mm, Weight: approx. 0.42 kg, Colour: Black