The Single Door Stop Header Mounted is a hardware component designed to convert a double acting door into a single acting one way door with a positive stop. This door stop is intended for use with a continuous header in both commercial and residential door applications. The unit measures 2" in length, 1/2" in width, and 1/2" in height. It features a matte black finish, providing a consistent appearance for door hardware installations. This component is designed for straightforward integration into existing door systems to manage door swing direction. By installing this stop on the header, the door movement is restricted to one direction, which is necessary for specific traffic flow requirements in commercial buildings or private residences. The matte black finish is applied to the surface to match common door hardware aesthetics. This header mounted stop is a functional piece of commercial patch fitting hardware that assists in the configuration of door swing paths. It is compatible with standard door headers and is installed to ensure the door closes against a fixed point, preventing it from swinging past the closed position. The compact size of 2" by 1/2" by 1/2" allows it to be mounted discreetly while performing its function of stopping the door leaf.