3872 "Mounting Squares 750/Pkg-White 1/2"". THERM O WEB-Mounting Squares. Use these double-sided adhesive squares to permanently secure photos; cardstock; cards and other memorabilia onto scrapbook pages and greeting cards. These squares are acid-free and archival safe. This package contains 750 1/2in squares. Imported. Meets CPSIA (Consumer Product Safety Improvement Act) Standards."