Don-Jo
4 Inch Hinge Reinforcement Plate, Don-Jo HR-110
The Don-Jo HR-110 is a reinforcement mounting plate designed for 4-inch high hinges. It provides a mounting surface for steel doors or door frames where existing installation is missing, damaged, or undergoing new 4-inch hinge installation.
Constructed from steel, the plate accommodates standard 4-inch hinge template screw patterns and can be secured using screws, welding, or rivets to the interior of the door or frame. The hinge mounting holes are tapped for #12-24 hinge screws.
Also available: 4-1/2 Inch Hinge Mounting Plate

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