Double Bubble Reflective Insulation (Foil/Foil) 6'x125' - 750 sq ftEcoFoil Double Bubble Foil Insulation is engineered for use in pole barns, metal buildings, basements, crawl spaces, and storage areas that experience wider temperature swings. This insulation combines a reflective radiant barrier with two layers of polyethylene bubbles, forming an internal air gap that limits temperature transfer between surfaces. The double bubble design helps reduce frost and condensation in cold climates, while the thin,