Magic Mesh instant screen door lets fresh air in; keeps bugs out! Attaches to any entranceway in seconds without tools to provide an ultra-convenient, hands-free screen door. It opens easily when you walk through; closes automatically thanks to 18 powerful built-in magnets. Ideal for single doors, sliding doors, campers. Includes two 83" L x 19-1/2" W mesh panels, 12 hook-and-loop strips, 20 wood tacks, instructions.