Take the worry our of shattered glass in your gymnasium by shielding your clocks with our sturdy clock guard. This 20" x 20" x 4" unit is constructed of 1/4" diameter, 16-gauge steel rods welded to a steel frame and has a powder coated glossy black finish. The frame mounts securely to the wall, and is designed to provide clearance for the clock's electric cord to pass behind the frame. Door is double-hinged on one side for easy access. 3-year warranty.