Description: foil single/double bubble foil Foil single/double bubble foil is comprised of layers of polyethylene air bubbles (single/double) sandwiched two layers of 99% pure aluminum foil. The polyethylene encapsulated air bubbles serve as an effective thermal break as well as vapor barrier, ffwhile the two outer layers of aluminum reflect up to 97% of all of the radiant heating energy. Specification: 1. Lxw: 50/40*1.2m (custom also available) 2. Thickness: (1) single bubble: 3-3.2mm (2) double bubble 6.5-7mm 3. Bubble diameter: 9mm, 10mm, 20mm 4. Weight: (1) single bubble: 250g/m2, 280g/m2, 320g/m2, etc (fª250g/m2) (2) double bubble 320g/m2, 350g/m2, 380g/m2, 400g/m2, etc (fª 320g/m2) 5. Color: silver Technical parameters: 1. Temperature: -60 degrees f to 180 degrees f (-51 degrees c to 82 degrees c) 2. Reflectivity: 95%--97% 3. Pure aluminum thickness·ª7micron Benefits: **97% radiant heat reflection **vapor barrier, thermal barrier, radiant barrier **vibration absorption **damp proof, fire proof, radiant heat transfer Applications: **residential construction and retrofit: walls, basements, floors, ceilings, roofs, attics, crawl space **commerical and agricultural construction: poultry houses, hog and dairy barns **garage door: acted as a moisture barrier **warehouse:reduce air infiltration, keep the heat inside in winter and outside in summer. 1.2x40/50m per roll packed in a pe bag