AquieT Audio-Technica AT-AQ472 Speaker Coaster, Sound-Absorbing and Vibration-Damping Door Speaker Back Outer Panel

The surface is contoured to increase the sound absorption area. Achieves efficient sound absorption even in small shapes. Simple installation: just stick it to the outer panel behind the speaker. Made of high-density, heat-resistant virgin butyl rubber. High adhesiveness and ability to conform to contours, no specialist tools required for installation. Performs well in both high and low temperatures, minimizing seasonal variations in vibration-damping properties.