Auralex MetroLENRD Foam Corner Bass Trap (Burgundy, Box of 8)The Metro LENRD Bass Trap is a triangular shaped bass trap that fits into room corners and or wall ceiling junctures perfectly, and provides outstanding low frequency sound control. Based on the design of the wildly successful original LENRD Bass Trap, the Metro LENRD gives a fresh look to a reliable, unbeatable acoustic sound absorber. Plus, it's available in all 12 Auralex colors. All three Metro products work together to provide sound absorption,