Pinit BACKINGS for Whole Newspapers - FLAT. 1960's-2009. 15 x 23" .028" thick Acid-Free Board. Long-term Storage. SKU: KNPWAF28 (0)No Reviews yet Add to Shopping Cart Details BACKINGS for Whole Newspapers - FLAT. 15 x 23" .028 thick Acid-Free Board White on two sides. Use for long-term storage. 1960's-2009. Details Back DetailsBACKINGS for Whole Newspapers - FLAT. 15 x 23".028 thick Acid-Free Board White on two sides. Use for long-term storage.1960's-2009. Reviews 0 Back Ratings & ReviewsNo reviews availableBe the first to Write a Review