Fatmat Trunk Kit, Self-Adhering 50 mil Automotive Sound Deadener Trunk Kit &ndash; Set of Five 18 inch x 36 inch Sheets with Install Kit Set of Five 18 inch wide x 36 inch long Sheets Self-Adhesive FatMat Sound Dampener (22.5 sq ft total) with easy installation instructions, roller, knife, and FatMat Decal 50 mil nominal thickness Stops Noisy Rattles from Vibrations, Reduces Road Noise and Heat Pliable, easy to cut. Easy release peel-off liner. Conforms and fuses easily to sheet metal and other hard substrates.