Pinit BACKINGS for Window Card Posters 14-1/8 x 22-1/8". .125" thick "Banner Blue" Corrugated Cardboard. Acid-free & Buffered. Indefinite Storage. SKU: KWCPAC (0)No Reviews yet Add to Shopping Cart Details MUSEUM GRADE Window Card Poster Backings 14-1/8 x 22-1/8" .125" thick Archival Corrugated Cardboard. Acid-free & Buffered. "Banner Blue". Indefinite ... Details Back DetailsMUSEUM GRADE Window Card Poster Backings 14-1/8 x 22-1/8" .125" thick Archival Corrugated Cardboard. Acid-free & Buffered."Banner Blue". Indefinite Storage. Reviews 0 Back Ratings & ReviewsNo reviews availableBe the first to Write a Review