PBB CB81640CB81 4.5x4.5" 640 US10B 3K Bearing Stl Hinge
PBB CB81640CB81 4.5x4.5" 640 US10B 3K Bearing Stl Hinge
PBB Continuous Gear Hinges are offered in standard duty or heavy-duty. There are no accessible screws,bolts or pins when the door is closed. PBB gear hinges are surface mount or concealed, the PBB continuous gearhinges eliminate the gap between the door and frame, and provide a weatherproof, tamper-proof barrier. PBB gearhinges are manufactured with state-of-the-art machinery making each unit true templated. Full concealed units areUL listed for 3-hour fire rated doors. Certified ed to fire rating standards UL10B, UL10C, and UBC 7.2 in the U.S. andCanada.
