Pin type "knife hinge" non-self closing in machine antique English. 23/32" overlay with slotted holes for vertical and horizontal adjustment. Mounting screws included.
This hinge was one of the first types of "invisible hinge" and when installed part of the hinge sits along the top and bottom of the door. It is screwed into the back of the door and the side of the gable so that no screw heads are visible when the door is in the closed postion. If you have the opporuntity to visit a Home Depot store it is on a demo in the display were the inventory can be found and the demo door is listed as "Invisible Hinge for 3/4 Door"
Regards
Owen Freeman National Account Manager Richelieu Hardware ofreeman@richelieu.com