DMI Sports Deluxe Large Folding Wall Protector for Regulation-Size 18-Inch Bristle Dart Boards Large wall protector for regulation-size 18-inch bristle dart boards Polystyrene and hardboard material protects wall from stray darts Wall-protecting bumpers on back cushion against hard, fast tosses Lightweight, durable design won't stress board's mounting hardware Unfolds to 26.5 x 26.5 inches (W x H); 1-year warranty