Sentry Safety Panic Hardware 510-a Alarm Panic Exit Bar This Panic Exit Bar fits doors with a minimum width of 30 7/8" Great for Single door setup Equipped with a patented alarm function Includes Cylinder Lock & Key, and 1/2" Stainless Steel Latch Bolt Also includes strikes (latching devices), and 5/8" Stainless Steel Deadlocking Latch Bolt