Product Description 3M VHB Acrylic Foam Tape 4991 Double coated 0.090 in. (2.3 mm) pressure sensitive adhesive tape.Bonding many painted metals, unpainted metals, and higher surface energy plastics. Appropriate for applications which demand a thicker conformable products.Application IdeasReplaces screws and studs for various permanent sign mounting applicationsAttaches to a variety of wall surfaces including metal.wood, drywall, concrete and glass (some surface preparation may be needed)Can be used outdoors and indoors