Hofa Absorber Anthrazit, Absorber, An acoustic element for medium and high frequencies, High efficiency: at 200 Hz about 50% absorption, Complete absorption above 500 Hz, Effective acoustic element for optimising room acoustics, For best possible room acoustics, such as in sound studios, home cinemas or home recording, Frame: birch plywood, Acoustic material: Basotect acoustic foam, Flame retardant, Can be combined with HOFA interchangeable frames for flexible room acoustics, Dimensions: 500 x 500 x 110 mm, Weight: approx. 3.1 kg, Colour: Anthracite@+*Note* All HOFA acoustic modules are produced in Germany and in close cooperation with local sheltered workshops.@+@+