Acoustimac made a series of custom executive acoustic panels for our theater room. The front black panels by the screen are acoustically transparent black material to allow the speaker sound through the material and hide the speakers. Other panels of various sizes and colors were made with sound absorbing insulation that allows a cleaner sound in the room. These were put together and hung as larger panels. The materials were all excellent and the folks at Acoustimac helped me with the selection as well as quickly replaced a few panels damaged in shipping. The panel sizes needed to be exact to make this design and they were. I highly recommend this company.