INSTANT SCREEN DOOR lets fresh air in; keeps bugs out! Attaches to any entrance in seconds without tools to provide an ultra-convenient, hands-free screen door. Opens easily when you walk through; closes automatically thanks to 18 powerful built-in magnets. Ideal for single doors, sliding doors, RVs. Includes two 83" L x 19-1/2" W mesh panels, 19 wood tacks, 12 hook-and-loop strips, instructions.