Ives 3CB1 4.5X4.5 630  3-Knuckle Concealed Bearing Hinge, Standard Weight, 4-1/2" x 4-1/2", Satin Stainless Steel

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

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

Material substrate                                                                                      Made from brass, 1040 steel, or 304 series stainless steel