Construction: Metallized Film: 12.5Microns / Polyethylene / Tri-Directional Scrim / Kraft 60gsm or 80gsm/ Polyethylene / Metallized PET: 12.5MicronsApplication:Double sided metallized film insulatin is mainly used to instead of double side aluminum foil insulation for saving the cost. Also used as a water vapor barrier in air conditioning ductworks and cold rooms. Benefit: Doubleside metallized PET film provides higher tensile strength than double sided foil insulationand neat appearance, and the cost is much lower than pure aluminum foil insulation. Metalized film PET does not contain hazardous chemicals or harmful materials that cause itching or respiratory problems. Fiber glass scrim reinforced for strength and durability .Metallizedinsulation provides an efficient, space saving, and healthy method of temperature control and energy savings.Roll Size: Roll Width: 1.2M, 1.25M, 1.3M; Roll Length: 40M, 60M etc.