McKinney MPB79-4-1/2x4-1/2 Full Mortise MacPro Heavy Weight Ball Bearing Hinge, Five Knuckle, 4-1/2" x 4-1/2", Square Corner

The McKinney MPB79-4-1/2x4-1/2 is a full mortise, five knuckle ball bearing hinge built for high-frequency, high-traffic openings where durability matters most. Part of the trusted MacPro line, this hinge measures 4-1/2" x 4-1/2" and features a square corner design that fits standard commercial door and frame preparations. The two ball bearings provide smooth, reliable movement while supporting heavier doors over time. Constructed for consistent performance, it delivers the dependable operation commercial buildings demand. Whether you're outfitting new construction or replacing worn hardware, the MPB79 offers a durable, code-conscious solution suited to schools, offices, healthcare facilities, and other demanding environments.

Features

• Full mortise design for standard commercial door and frame preparation.
• Five knuckle construction for balanced load distribution and a clean appearance.
• Two ball bearings deliver smooth, quiet operation under heavy use.
• Heavy weight rating supports larger and higher-traffic doors.
• Square corner configuration matches typical hollow metal frame preps.
• 4-1/2" x 4-1/2" size fits a wide range of commercial openings.