3M 08840 3M SOUND DEADENING PAD MAKES RIDING IN A VEHICLE MORE PLEASANT BY SUPPRESSING ROAD NOISE, SOUND SYSTEM VIBRATIONS, RATTLES AND OTHER DISTRACTING NOISES. OUR SOUND DEADENING PADS ARE CONFORMABLE, SELF-ADHESIVE SHEETS THAT CAN BE EASILY CUSTOM CUT AND APPLIED TO VEHICLE FLOOR PANS, ENGINE COMPARTMENTS, HOODS, DECK-LIDS, INSIDE DOORS AND ON BODY PANELS.