Pinit BACKINGS for Window Card Posters 14-1/8 x 22-1/8". .1875" thick Foam Board. Acid-free & Buffered. All white. Indefinite Storage. SKU: KWCPFC (0)No Reviews yet Add to Shopping Cart Details MUSEUM GRADE Window Card Poster Backings 14-1/8 x 22-1/8" .1875" (3/8") thick Foam Board. Acid-free & Buffered Boards. All white. Indefinite storage. Details Back DetailsMUSEUM GRADE Window Card Poster Backings 14-1/8 x 22-1/8" .1875" (3/8") thick Foam Board. Acid-free & Buffered Boards.All white. Indefinite storage. Reviews 0 Back Ratings & ReviewsNo reviews availableBe the first to Write a Review