ArtRight security Hangers are great for hanging artwork or signage in earthquake zones, windy areas, boats, spacecraft, on moving walls and doors. This traditional security system has been the favorite of hotels, hospitals, and commercial office and retail buildings for decades. If the artwork is forcefully removed from a wall...the wall suffers only minimal damage. For additional security, this system can be screwed into a wooden wall panel, or used with extra T-screws and brackets at the picture frame s bottom. We assemble all hardware kits using top-quality screws and other components. Most orders placed by 4:30pm EST ship out the same day! Custom kits are available, email with any questions. Head of T screw inserts into bracket, which is screwed into backside of picture frame. The screw is then turned 90 degrees using special wrench. Recommended for frames up to approximately 30" in width, weighing up to approximately 25 lbs. (use additional support brackets for heavier/wider frames). Includes all pieces for security hanging of 25 wooden or aluminum picture frames; 17 pieces per frame.