Precut Foam Mounting 1 Squares, Double-Sided, Permanent 16/Pack, Sold as 16 Each Double-sided, high density foam tape. Faster, safer, more versatile than screws and nails. Double-sided, high-density foam tape has a long-lasting adhesive for secure bonding. Readily mounts to a variety of surfaces. Great for mounting signs, plaques, picture frames, name plates and more!