Ives 3CB1 4.5X4.5 3-Knuckle Concealed Bearing Hinge, Standard Weight, 4-1/2" x 4-1/2"

• Recommended for medium weight doors (<150 lbs)
• Recommended for medium frequency usage (<400 cycles per day)
• Made with two concealed nylon bearings
• Recommended for use with a door closer
• Packed with fasteners for hollow metal and wood doors

Ives 3CB1 Certifications                                                      

• Certified to ANSI/BHMA A156.1 for performance standards
• Meets ANSI/BHMA 156.7 for template hinge dimensions 
• UL Classified for windstorm-rated assemblies - R37965
• UL Listed, 3-hour fire doors