Vicoustic VicPattern Ultra Wavewood Cherry, Set of 3 Absorbers/Diffusers, Acts both as an absorber and diffuser, Professional mounting system (VicFix J profiles), Consists of VicPET Wool, MDF and scratch-resistant melamine foam, Effective range (absorption): 500 - 4000 Hz, Maximum effectiveness between 630 - 1600 Hz, Dimensions: 595 x 595 x 50 mm, Set includes 3 pieces of VicPattern Ultra Wavewood, Colour: Locarno Cherry, Includes 6x 80 mm VicFix J profiles (mounting system)