This is an osram hql de luxe mercury vapour lamp the wattage of the lamp is 400w with an e27 cap and comes in colour 3400k areas of application for the lamp include factories and workshops industrial installation streets car parks courtyards pedestrian zones public squares parks and gardens and is also suitable for use in open and enclosed luminaires and also outdoors in suitable luminaires dimensions amp weight diameter 1220 mm length 2850 mm