Hofa Absorber Royal Blue, Absorber, Acoustic element absorbs mid and high frequencies, High efficiency - at 200 Hz about 50% absorption, complete absorption above 500 Hz, Effective acoustic element for the optimization of room sound, for best possible room acoustics such as in recording studios, home theaters or home recording, Frame: Birch plywood, Acoustic material: Basotect acoustic foam, Bordeaux clothing, Low inflammability, Can be combined with HOFA exchange frame for flexible room acoustics, Dimensions: 500 x 500 x 110 mm, Weight: approx. 3.1 kg, Colour: Royal blue