Pinit BACKINGS for Newspaper Single Sheets - FLAT. 14-1/8 x 23". .040" thick Acid-Free & Buffered Board. Indefinite Storage. SKU: KNPSAF40 (0)No Reviews yet Add to Shopping Cart Details MUSEUM GRADE BACKINGS Use for Newspaper Single Sheets 14-1/8 x 23" .040" thick Acid-Free & Buffered Board. All white. Use for indefinite storage. Details Back DetailsMUSEUM GRADE BACKINGS Use for Newspaper Single Sheets14-1/8 x 23" .040" thick Acid-Free & Buffered Board. All white. Use for indefinite storage. Reviews 0 Back Ratings & ReviewsNo reviews availableBe the first to Write a Review