Fatmat Self-Adhesive RattleTrap Sound Deadener Pack with Install Kit - 25 Sq Ft x 80 mil Thick Five 18 inch x 40 inch Sheets Self-Adhesive RattleTrap (25 Sq Ft Total) with Install Kit Consisting of Easy Instructions, Roller, Knife, and FatMat Sound Control Decal 80 mil nominal thickness with Patented "Super-Stick" Adhesive Sound Deadening Acoustical Insulation for automotive, trucks, homes, RV's, and marine Hear more of the sound you want! Vibrational damper: reduces distortion, boosts bass. Uses range from personal enjoyment to extreme competitions such as dB Drag Racing. Pliable, easy to cut, heat-resistant aluminum coating. Keep Sound In, Noise Out - A Sound Decision!