(Note: Measurements are outside max. dimensions unless stated otherwise).21st Century : Art Deco door knocker.Option : This casting is supplied at a budget price with a basic machine tumble polished finish which is rather dull caused by minute pitting from bead blasting. We can buff polish by hand to a smooth finish as an option if selected by clicking on the OPTION box above, or supply machine polished if left unticked. Overall height 152mm. (6")Heavy striker ball 36mm. (1 3/8") diam. Distance between two top studs 18mm. (11/16") centre to centre. Distance between top studs and bottom stud 130mm. (5 1/8") centre to centre. STRIKING PLATE Width 45mm. (1 3/4")Height 32mm. (1 1/4")OVAL TOP PLATEWidth 42mm. (1 5/8")Height 23mm. (7/8")SPINDLESFor maximum door thickness 51mm (2")Steel pivot pin. Supplied with three lengths mild steel threaded rods and three hexagonal capped chrome nuts.