Auralex Acoustics SonoLite Bass Trap Low Frequency Absorption Panel, 3" x 24" x 24", Tan Fabric wrapped Studiofoam with rigid backing. Absorbs low frequencies to smooth out a room's overall bass response. Yields a more balanced listening environment by controlling bass build up and cancellation through out a room. Velour fabric wrap for a more finished, svelt look than traditional Studiofoam. Easily installed to finished walls with EZ-Stick Tabs without causing any damage or visible blemishes when removed.