From Knightsbridge a dimmable 80W max fixed downlight lampholder (Bulb Not Included). The fitting is double insulated and comes supplied in a chrome finish working on 240V mains. The R80 downlight is suitable for a wide range of commercial and domestic applications and is designed for use with E27 edison screw bulbs. Product Dimensions Diameter 125mm x Recess Depth 130mm. Cut out diameter 90mm.