Schlage 5BB1 4.5 X 4.5 F643E/716 CON T 5-Knuckle Ball Bearing Standard Weight Full Mortise Butt Hinge, Aged Bronze

Deliver dependable, low-maintenance door performance where it matters most — in commercial entrances, security rooms and monitored facilities. The Schlage 5BB1 Full Mortise Butt Hinge is a 5-knuckle, ball-bearing door hinge engineered for smooth, consistent operation under frequent use. Its 4-1/2" x 4-1/2" standard-weight profile provides a flush, professional fit for standard doors, while the aged bronze finish offers long-lasting corrosion resistance and a refined appearance that complements security hardware. Ideal for access-controlled entries, server rooms, and surveillance/monitoring areas, this hinge minimizes noise, reduces binding and lowers long-term maintenance costs. The robust construction supports reliable door alignment and secure operation—key factors for facilities that prioritize security and uptime. Specify the Schlage 5BB1 for projects that demand durable performance and a clean aesthetic. Order now to upgrade door reliability on commercial or security installations.

• Smooth, reliable operation for high-traffic commercial and security doors thanks to precision ball bearings
• Full mortise, 4-1/2" x 4-1/2" design for a flush, professional installation that improves door alignment and longevity
• Aged bronze finish resists wear and complements architectural and security hardware aesthetics
• Heavy-duty 5-knuckle construction reduces maintenance and extends service life in monitored or access-controlled environments
• Reduces noise and binding to support surveillance and monitoring areas where quiet, dependable door performance matters