We noticed that most car builders thought the “sound dampening” material they were using would also block out the heat. This is not true. So we created Membrane, the only material that does this. This is just not an-add-on “liner” to place on your vehicles body to muffle noise or rattle. Membrane’s four-layer material is like nothing else found on the market. Membrane's 2 in 1 Design there is an added Sound Dampening layer. Membrane is simple to use. Measure, cut, and peel to apply to your vehicle. Membrane conforms to all the curves and angle your ride offers, without having an odor or being messy like drip materials. No one wants that.
Each box of Membrane contains 9 sheets of 31.5” x 19.6” Thermal Insulator with Sound Dampening material.
http://www.restomodair.com/shopprodu...mal-insulator/