... :Alu+Woven+B+Alu 2, Roll size:1.2m*30m / 40m 3, Feture: Light,heat insulant 4,Usage: Building Insulation & Pack ... or breathing Equipment Application: 1,Building Thermal Insulation Material(1),Roof,Underlay,Under Concrete & floor Insulation; (2),Attic,Crawl Space,Stud Wall ... ,Metal Frame Building Insulation. 2,Wrapping (1),Protective coatings of ventilating pipe,HVAC Duct & ...