Hager 4-1/2 Inch x 4 Inch Ball Bearing Square Corner Mortise Door Hinge - Single Hinge

Features: 

• Includes a single hinge in each order
• Tested for commercial application, ideal for heavy use
• Non-rising removable pin allows you to easily remove your door without uninstalling the hinge
• Packaged with eight (8) wood and machine screws
• Constructed with eight (8) screw holes in an arc hole pattern arrangement for maximum mounting strength

Product Technologies:

• Ball Bearing Hinge: Ball bearing hinges are designed to handle the extra stress brought on by high traffic doorways. The greased bearings reduce the rotational friction extending the life of a hinge in heavy use situations. These hinges tend to be more durable than standard, or plain bearing hinges.
• Material - Steel: Steel is cheap, strong, and durable, making it a favorite for hinges of all types, despite it being slightly more prone to rusting than solid brass or stainless steel.
• Mounting: The standard corners for mortised door hinges are 1/4" radius, 5/8" radius and square corner. It is recommended that three hinges be used on doors up to and including 7.5 feet with one additional hinge for each additional 2.5 feet. Make sure you check your current hinges before making a purchase.

Specifications:

• Height: 4-1/2"
• Width: 4"
• Material: Stainless Steel
• Mount Type: Mortise
• Gauge (Thickness of Hinge Steel): 0.180"
• Number of Knuckles: 5
• Number of Holes: 8
• Quantity: 1
• Corners: Square