For those who want to preserve their beautifully completed puzzles, Galison now provides Puzzle Glue sheets. Simply peel the backing off the adhesive sheets and apply to the back of the finished puzzle. The sixteen 7 x 10" sheets will preserve two 1000 piece puzzles and includes 4 adhesive hangers for temporary storage. Sixteen 7 x 10" adhesive sheets. Four adhesive hangers. Preserves two 1000-piece puzzles. Perfect for puzzle preservers!