Check the listing for details. Reflective Insulation Foam Core Radiant Barrier 16" x 60" Double Side Foil Cold. Condition: New. Listed at 135.60 USD. 16inch/40cm Width, 60inch/15.2Meter Length, 0.12inch/3mm ThicknessEnergy SavingReflective aluminum foil is composed of upper and lower aluminum foil and a single layer of polyethylene bubbles in the middle. The surface aluminum film can directly reflect rays and heat, and the bottom aluminum blocks residual heat. It has double-layer protection and a better heat insulation effect. It can be insulated cold air to create a hot winter and block heat to create cooler summers, thus saving your electricity bill.More Than 80% Thermal InsulationDouble-layer bubble reflective film has a thermal insulation effect of more than 80%, and a thermal conductivity of 0.032-0.036W/m.K. After using this insulation film in winter, the indoor temperature can be 5-8 degrees higher than the outdoor temperature, effectively keeping warm.