Dynamat Xtreme Door Kit: Dynamat Xtreme quiets annoying road noise, improves a speaker's dynamic range, and makes for a more comfortable driving experience. You can quiet down the noise and get better sound. Kit contains four 12" x 36" (305mm x 914mm) pieces of Dynamat Xtreme to reduce road noise so you Hear More Music! ™. Kit includes enough material for two standard size doors. For proper installation, use one of our Dynaroller tools. Thickness: 1.72mm Kit contains four 305mm x 914mm pieces of Dynamat Xtreme to reduce road noise so you Hear More Music! ™. Kit includes enough material for two standard size doors. For proper installation, use one of our Dynaroller tools. Dynamat Xtreme: Dynamat Xtreme is a black butyl-based core with 4 mil aluminium constrain layer, and craft paper release liner. Description: Dynamat is a patented, lightweight elastomeric butyl and aluminium constrained-layer vibration damper. Dynamat conforms and fuses easily to sheet metal and other hard substrates. Material performance is optimized for temperature ranges between 14°F and 140°F (- 10°C to +60°C). Material can withstand temperature extremes between -65°F and +300°F (-54°C to +149°C) and is highly resistant to aging. Applications: Dynamat can be die cut to shape and placed onto the body surface directly on painted panels or after the sheet metal is cleaned before painting (typically at the sealer application operation). Dynamat is used to treat metal panels, partitions, duct doors, bins, panels and so forth in automobiles, railroad cars, buses, and ships. It is also used for ventilation ducts, relay cabinets, steel furniture, home appliances, sink units, computer equipment, machine tools and many other objects that suffer from vibration-production noise. Installation: Use scissors, knife or die to cut Dynamat to the desired size and shape before removing the release liner. Next, remove dust, grease, moisture, and other foreign matter from the application surface. Peel off the release liner. The simplest application technique is to bend the mat slightly and attach it along its shortest edge. Press the mat firmly into place, using a Dynamat roller for larger pieces. The roller reduces the risk of leaving air pockets, which reduce Dynamat’s sound damping capacity. Finish by covering all seams and wiring with DynaTape to ensure a professional look and finish. The temperature of the mat and application surface should not be below room temperature during fitting. Heating the material is not necessary.