Measures 12" in height, and 6" in width. About 8" across face of trap. Color: CharcoalEliminates Standing Waves And Flutter Echoes ; Reduces Unwanted Reflections Dampens and diffuses mid to low frequency sound waves inside of a room to minimize interference, Increases increasing sound clarityMore affordable than competitive productsProduct Care: Occasional Vacuuming of Dust , For use in home theaters, professional movie theaters, concert halls, gymnasiums sports centers, recording studios, auditoriums and more!They are commonly used in recording studios, mastering rooms, home theatres and other rooms built to provide a critical listening environment. Like all acoustically absorptive devices, they function by turning sound energy into heat through friction. Bass traps work by providing resistance, generally in the form of an insulation material with the right properties, specifically proper gas flow resistivity.