PBB

The BB84 Half Surface 4-1/2” Door Hinge is a specialty hinge.  The hinge leaf will mount on the door frame in the standard mortise position and the other leaf mounts on the door face.  These are five knuckle, two bearing with square edges.  They are constructed of 10 gauge (.134”) steel that is then plated to the desired finish.  We ship in boxes of 3 hinges with the wood and machine screw.

The PBB Shim Hinge is for use in Fire Doors where the doors are not square.  Putting cardboard or wood shims on fire doors is prohibited, so they have come up with a solution where one of the leaves are drilled tapped and a set screw is inserted.  These hinges are only available in 4.5 x 4.5 sizes in brushed chrome finish. They are sold in boxes of three hinges and come with wood and machine screws. The base metal is steel.