1000 sqft Barrier Solar Attic Foil Reflective Insulation Diamond Radiant 4x250

Product name: Insulation film Material: Metalized Film Color: Silver Size: 4ft x 250ft Weight: 14lbs/1000 Reflectivity: 97% Thermal conductivity: 0.0409w / m2 * k Thermal Resistance: 2.9m2 * k / w It can withstand the temperature: -40 ℃ -80 ℃