Design Engineering 050220 Boom Mat Spray-on Sound Deadening to Reduce Unwanted Road Noise and Vibration Reduce unwanted road noise and vibration, even in hard-to-reach places Won't crack or chip; helps prevent rust Paintable in just 6 hours Single can will cover approximately 20 sq. ft. Can be applied in multiple layers for even more sound deadening while handling temperatures up to 300 degrees Fahrenheit