Pinit BACKINGS for Comic Art, Prints & Posters. 11-1/8 x 17-1/8". .040" thick Alpha Cellulose board. Acid-free, lignin-free, buffered. Indefinite storage. SKU: KAF40OA1117 (0)No Reviews yet Add to Shopping Cart Details Backing Boards for Comic Art, Prints & Posters 11-1/8 x 17-1/8" 100% Alpha-cellulose board. .040" thick. Off-white. Acid-free, lignin-free, buffered.... Details Back DetailsBacking Boards for Comic Art, Prints & Posters 11-1/8 x 17-1/8"100% Alpha-cellulose board. .040" thick. Off-white. Acid-free, lignin-free, buffered.Indefinite storage (100s of years). Reviews 0 Back Ratings & ReviewsNo reviews availableBe the first to Write a Review