Product Description Using Cascade ceiling corner traps eliminate unwanted reflections. Reflected sound causes standing waves that detract from the overall sound by making bass boomy and ill-defined. It also causes smearing and blurring of the midrange, making the sound dull and lifeless. Adding this room treatment effectively solves reflection problems, improving imaging and giving music a more realistic and detailed sound! Charcoal in color. Dimensions: 17" W (across convoluted face) x 24" H x 12" D (each side).