McKinney RBT4A3786-4-1/2x4-1/2-US26D Full Mortise Heavy Weight Bearing Hinge, Five Knuckle, 4-1/2" x 4-1/2", Square Corner, 626 Satin Chrome Finish

The McKinney RBT4A3786 is a full mortise heavy weight bearing hinge engineered for high-frequency, high-traffic openings where standard hinges fall short. Measuring 4-1/2" x 4-1/2" with a square corner template and a durable 626 Satin Chrome finish, it features a five knuckle design with concealed ball bearings that carry heavy doors smoothly and quietly over years of service. Built for both commercial and institutional environments, this hinge delivers consistent performance on solid core and heavy timber doors. Its robust construction reduces sag and wear, making it a dependable choice for entryways, corridors, and other demanding applications requiring long-term reliability.

Features

• Full mortise design for flush installation on door and frame.
• Heavy weight construction handles wider, heavier doors and high-frequency use.
• Five knuckle configuration with ball bearings for smooth, quiet operation.
• 4-1/2" x 4-1/2" size with a square corner template.
• Attractive 626 Satin Chrome finish suited to a range of commercial interiors.
• Suitable for solid core, heavy timber, and high-traffic openings.