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

The McKinney MPB79-4-1/2x4 is a full mortise, five knuckle ball bearing hinge built for demanding commercial openings that see frequent use. Measuring 4-1/2" x 4" with a square corner template, this MacPro series hinge features a heavy weight design with concealed ball bearings that deliver smooth, quiet operation while supporting the weight of solid core and heavier doors. Manufactured in the USA, it meets ANSI/BHMA standards and is well suited for schools, hospitals, offices, and other high-traffic environments. Its durable construction and proven bearing system make it a reliable choice where long service life and consistent performance matter.

Features

• Five knuckle, full mortise design for standard commercial door and frame preparations.
• Heavy weight construction rated for solid core and heavier doors.
• Concealed ball bearings provide smooth, quiet swing and reduced wear over time.
• 4-1/2" x 4" size with square corner template for broad compatibility.
• Part of McKinney's MacPro line, engineered for durability in high-use openings.
• Manufactured in the USA to ANSI/BHMA specifications.