This 48 in. by 125 ft. reflective insulation radiant barrier roll is designed for garages, attics, walls, crawl spaces, workshops, sheds, RVs, ducts, and other insulation projects. The heavy-duty 5 mm reflective insulation helps reflect up to 95% of radiant energy to support improved thermal performance in hot or cold conditions. Its lightweight roll format is easy to cut, fit, and install around framing, doors, windows, pipes, vehicle interiors, and storage areas. The moisture- and vapor-resistant surface helps provide year-round protection, while the nontoxic, nonallergenic construction supports residential and jobsite use. Use it as a thermal shield, sound-dampening layer, or supplemental insulation barrier for home improvement, automotive, and workshop applications. The finished 48 in. by 125 ft. size provides approximately 500 sq. ft. of coverage.