3M™ VHB™ Tape 4611, firm foam, general purpose acrylic adhesive, dark gray, thickness 0.045 in. (1.1 mm), red PE film liner. UL 746C - File MH17478. 3M™ VHB™ Tape 4611, excellent for bonding metals and other high surface energy materials, high temperature resistance. UL 746C - File MH17478.