Size You will receive 1 roll of bubble reflective foil insulation, measuring 16 inches x 25 feet, 3mm thick, enough length can be used for a long time. This aluminum bubble foil insulation film can be used at working temperatures ranging from -40°C to 80°C, which is wide enough to not be affected by any weather and can be used all year round. Energy Saving Reflective 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.
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