Vicoustic VicBooth Ultra Pack 2, Absorber panels, Set consisting of 2x VicPattern Ultra Wavewood Black Mat, Absorber and diffuser at the same time, Consisting of VicPET Wool, MDF and scratch-resistant melamine foam, Effective range (absorption): 500-4000 Hz, Maximum effectiveness: 630 - 1600 Hz, Suitable for VicFix system in VicBooth Ultra, Dimensions: 595 x 595 x 50 mm, Colour: Black Matt