The Lineco Foil Back Frame Sealing Tape 1 1/4"x1000" No. L387-0151 This frame sealing tape seals off raw wood rabbets and fillets to protect the art and seals filler boards to the frame. An acid-free, lignin-free buffered paper is laminated to a thin aluminum barrier layer and coated with an aggressive, acrylic adhesive. The aluminum provides a barrier that stops acid migration and meets the FACTS standard for maximum preservation framing. The aggressive acrylic adhesive holds strong to raw wood. UPC 099295530118