(Note: Measurements are outside max. dimensions unless stated otherwise).
18th Century : Robert Adam style backplate for door knob. As per the door furniture at Osterley House.
Width 99mm. (3 15/16")
Height 108mm. (4 1/4")
Thickness (variable) 4mm. (3/16")
Will fit max. diam. Knob backplate of 43mm (1 11/16")