DHHD057 is an Aluminum Continuous Geared Full Surface Hinge. It can be used with any standard frame without hinge preps, and either with or without reinforcements depending on door weight. The frame face must have a flat surface at least 1-1/32″wide. Clearance between the hinge edge of the door and the frame rabbet is 1/32″ (1mm). “HD” models have additional bearings and frame fasteners for heavy-duty application.
More Details at: