3M Heavy Duty Aluminum Foil Tape 438 Silver 24.25 in x 100 yd 7.2 mil 1 per case Bulk

Our 3M(TM) Heavy Duty Aluminum Foil Tape 438 combines an aluminum foil backing and acrylic adhesive system that is suitable for applications both indoors and outdoors. This sturdy tape has a 5.0 mil thick foil backing that provides durability and is designed to resist flame, moisture, weather, chemicals and ultraviolet (UV) degradation. 3M(TM) Heavy Duty Aluminum Foil Tape 438, dead-soft aluminum foil backing, excellent heat and light reflection to protect against high temperatures and U.V. degradation. The foil also serves as an excellent barrier against moisture. Acrylic adhesive supplies superior temperature, U.V. and solvent resistance. It provides excellent age life and is ideal for harsh, long-term outdoor environments. Thickest aluminum foil tape. Meets F.A.R 25.853(a) and meets UL 723 Class L.