Best 711128100 Extra Heavy Full Surface Hinge Steel

Product Description

The BEST 711128100 is an extra heavy full surface hinge designed for demanding door applications where both leaves mount directly to the face of the door and frame without mortising. Constructed from steel with a plain finish, this hinge measures 3.5 inches in height and 3.5 inches in width, giving it a nominal size of 3.5 x 3.5 inches. The non-removable pin adds a layer of security by preventing the pin from being driven out when the door is closed. Licensed contractors and commercial door hardware installers specify this type of hinge for heavy-duty swing doors in institutional, commercial, and industrial settings.

Full surface hinges are commonly used where mortising is not practical or where door and frame materials make cut-in installation difficult. This hinge suits commercial interior doors, metal-clad doors, and retrofit applications where the original mortise hinge has failed and a surface-mount solution is preferred. The extra heavy designation indicates a reinforced leaf thickness appropriate for high-cycle or high-traffic door installations.

Key Features

• Full surface mount — no mortising required on door or frame
• Non-removable pin for added door security
• Steel construction for extra heavy duty service
• Nominal size 3.5 x 3.5 inches suits standard commercial door applications
• Leaf thickness of 0.120 inches provides rigid, durable load bearing
• Plain finish accepts field painting or coating after installation

Compatibility

Designed as an OEM-style full surface replacement hinge for commercial and institutional doors requiring extra heavy duty hardware with a 3.5 x 3.5 inch nominal size and full surface mounting.

Installation Notes

Installation is typically performed by a licensed door hardware technician or commercial contractor. Remove the door from service and ensure all hardware is de-tensioned before beginning work. Fasten both leaves securely to the door face and frame face using fasteners appropriate for the substrate material. Verify door alignment and swing clearance after installation per applicable building code requirements.