Exit Device Black Anodized Aluminum

8400 Mortise Exit Device, Motorized Latch Retraction, Aluminum Doors, 36 Inches, 1-1/2'' Backset, RHR, Black Anodized AluminumClean, unobtrusive design. Easy to install.Patented ''Starwheel'' bolt interlocks door to frame, which is a unique feature for exit devices. The ''Starwheel'' bolt comes into play when the door closes. The interlocking noseguard and starwheel bolt close around the strike. The deadlocking slide springs over, locking the starwheel bolt to the strike. When the pushbar is depressed, the deadlocking slide moves back, allowing the door to unlock from the strike.