E27 to GU9 extender is 52mm high by 29mm wide (27mm screw to GU9). E27 to Either E14, B22, E27, MR16, GU10 or G9 Lamp Socket Fitting Extender/Adaptor/Holder. E27 to B22 adaptor is 52mm high by 27mm wide (22mm bayonet to 27mm screw).