Hush mat Megabond Silencer is the perfect material to use to reduce heat transfer from your big engine, drive train or exhaust and reduces the high frequency noise caused by road surface variation (tire noise), engine noise, and wind noise passing behind trim panels. Aggressive butyl based adhesive on back for one step peel and stick application. Stick to sheet metal or fiberglass vehicle surface or directly onto aluminum surface of Hush mat Ultra vibration damping material for the ultimate Cool & Quiet interior