Pinit BACKINGS for A4 Magazines 8-3/8 x 11-7/8". .040" thick Acid-Free, Lignin-free Buffered Board. Indefinite Storage SKU: KAF40A4 (0)No Reviews yet Add to Shopping Cart Details MUSEUM GRADE BACKINGS. Use for Indefinite Storage. A4 Magazine Acid-free & Buffered Board 8-3/8 x 11-7/8" .040 thick All white. Details Back DetailsMUSEUM GRADE BACKINGS. Use for Indefinite Storage. A4 Magazine Acid-free & Buffered Board8-3/8 x 11-7/8" .040 thick All white. Reviews 0 Back Ratings & ReviewsNo reviews availableBe the first to Write a Review