Installed in seconds, Plylox window clips slide onto the edge of a plywood sheet which is then easily inserted into the exterior window casings of your home or business. No drilling holes. After protecting your home or business from high winds and flying debris, the plywood can be removed in seconds without tools. There is no longer any need to drill holes in brick in order to protect your windows from storm damage. Head-on gusts of wind will hold covers in place no matter how they are mounted. But wind blowing across the face of the plywood generates lift that can pull the cover out of the casing. Plylox window clips transfer the outward force of the lift through their tension legs. This transfer of energy forces the clip against the casing and holds the cover securely in place in the worst possible conditions.