Cal-Royal RCBB31 4-1/2" x 4-1/2" – 1/4" Radius Ball Bearing Hinge NRP

The Cal-Royal RCBB31 is a high-performance ball bearing hinge designed for commercial and institutional doors. With a 1/4" radius corner and heavy-duty construction, it ensures smooth operation and long-term durability in high-traffic environments.

Key Features:

• Size: 4-1/2” x 4-1/2” with 1/4” radius corners – fits standard commercial doors.
• Ball Bearing Design: Reduces friction for smoother, quieter door operation.
• Heavy-Duty Construction: Made from high-quality steel or stainless steel for strength and longevity.
• Full Mortise Hinge: Designed for flush installation in wood or metal doors.
• ANSI/BHMA Certified: Meets A156.1 standards for commercial-grade hinges.
• Non-Removable Pin: Ideal for security-sensitive applications.
• Finish Options: Available in US26D (Satin Chrome), US10B (Oil Rubbed Bronze), US3 (Polished Brass), and more.
• Application: Suitable for doors weighing up to 200 lbs in high-traffic areas.

Perfect For:

• Commercial Buildings
• Schools & Universities
• Hospitals & Healthcare Facilities
• Office Spaces
• Government & Institutional Facilities