C.R. LAURENCE 401612 CRL 1/16" x 1/2" x 108" 3M Scotch Mount Foam Tape. The strong, pressure sensitive adhesive of CRL 3Mr Scotch Mount Foam Tape is bonded to a high density foam. Because this foam conforms to any surface, you will find it ideal to use for mounting mirror squares, small plaques or frames directly to walls. A favorite in the glass industry, it is available in three widths, and gives you neat, clean, and easy mounting..