Pinit BACKINGS for Insert Posters 14-1/8 x 36". .1875" thick C-flute Corrugated Cardboard. White both sides. Short-term Storage. SKU: KIP (0)No Reviews yet Add to Shopping Cart Details Insert Poster Backings 14-1/8 x 36" .1875" thick, C-Flute Corrugated Cardboard. White on both sides. Short-term Storage. Details Back DetailsInsert Poster Backings 14-1/8 x 36" .1875" thick, C-Flute Corrugated Cardboard. White on both sides. Short-term Storage. Reviews 0 Back Ratings & ReviewsNo reviews availableBe the first to Write a Review