A4 SIZED STIFFENER/BACKING BOARDS. BACKING/STIFFENER BOARDS : "A"DIGEST/COMMANDO SIZE, "B" CURRENT U.S. COMIC, "C" SILVER AGE SIZE, "D" GOLDEN AGE, "E" MAGAZINE, "F" OLD SIZE 2000 A.D. "G" TREASURY/EAGLE (POLYTHENE ONLY), "H" NEW SIZE 2000 AD,"I" 8" X 10" PHOTOGRAPH SIZE,"K"TV21 & OLD EAGLE SIZE, "L" A4 SIZED, "N" 12" X 16" PHOTO/PICTURE SIZE.
