Pinit BACKINGS for 18 x 24" Prints. 18 x 24" .125" thick, B-flute Corrugated Cardboard. White both sides. Short-term Storage. SKU: K1824 (0)No Reviews yet Add to Shopping Cart Details 18 x 24" Print Backings .125" thick, B-flute Corrugated Cardboard. White both sides. Short-term storage. Note: 15 quantity can only be purchased wh... Details Back Details18 x 24" Print Backings .125" thick, B-flute Corrugated Cardboard.White both sides. Short-term storage.Note: 15 quantity can only be purchased when ordering backings for poster displays. Reviews 0 Back Ratings & ReviewsNo reviews availableBe the first to Write a Review