BB900 4.5″ Heavyweight Ball Bearing Swing Clear Hinge Finish:Satin Chrome more consistent threshold surface

more consistent threshold surface

Total Height with Insert: Approx

Additional fastener holes for low-frequency doors up to 1

Metal and Wood: T3 Back to Back and Thru Bolt

Escutcheon plate size: 5-3/8" x 4-25/32" x 3/32"

BB900 4.5″ Heavyweight Ball Bearing Swing Clear Hinge Finish:Satin Chrome more consistent threshold surfaceCal Royal BB900 4. 5" Full Mortise Hinge, Heavy Weight, Two Ball Bearings, Swing Clear Use in hospitals or other institutional type buildings. Swings door completely clear of opening when door is opened 95 degrees. Swing clear hinges are designed so that when the door is opened to 90 degrees, the door itself is completely out of the opening.