Lineco self-adhesive frame sealing tape seals off raw wood rabbets and fillets to protect the art and stop acid migration. An acid free, lignin free buffered paper is laminated to a thin aluminum barrier layer and coated with an aggressive acrylic adhesive that bonds firmly to raw wood. The aluminum provides a barrier that stops acid migration and meets the FACTS standard for maximum preservation framing. Tape roll is white in color, and is 1.25 inches (32 mm) by 85 feet (25.9 M) long. Made in USA.