Vicoustic VicPattern Ult Wavewood Wenge, Absorber / Diffuser Set, Acts as an absorber and diffuser at the same time, Professional mounting system (VicFix J Profile), Made from VicPET Wool, MDF and scratch-resistant melamine foam, Effective range (absorption): 500-4000 Hz, Maximum effectiveness: 630-1600 Hz, Dimensions: 595 x 595 x 50 mm, Package quantity: 3 Pieces, Colour: Dark wenge, 6x VicFix J Profile 80 mm attachment system