MMT Acoustix® Wall Diffusers are introduced to re direct the sound waves to treat sound reflections and flutter waves. Diffusers divert all frequency sound waves for best room acoustics. Made into perfect size for designing and sound absorption purposes as well. Made of highest quality acoustic foam and also absorbs sound. It acts as a bass absorbers on the walls where low frequency dominates.It can be installed in horizontal and vertical desugn pattern for best diffusion properties. Comes in a set of 4 pcs for best treatment.