Specification: Thickness : 5mm ~ 15mm Density: 60kg/cmb~125kg/cmb Character: Sound absorption, Thermal Insulation, Fitter Friendly Size of the Roll: According the demanding of our customers. Regular Dimension of one Roll: 11mX1.37m=15.07 square meter Surface Backing Choice: PE film, Crepe Paper, Stitching Paper, Non-woven Fabric or Aluminum Foil. Different Color of the Backing can be accepted. Origin: Manufactured in China Can be well custom-bulit by our client! Please feel free to contact with us!