GU5.3 12v 35 Watt max lampholder. MR11 12v 35 Watt Lamp (not Supplied with Fitting - products codes L22D or L25D). Electrical termination via 10 Amp Connector block within secure enclosue Comes With cord grip. Dimmable with Electronic Transformer (not Supplied with Fitting - see Transformer & Drivers section). Outer diameter 60mm, recessed depth 42mm. Cut-Out 42mm. 100mm recommended ceiling void required. Spring clip fixings with a recommended maximum ceiling thickness of 12mm.