41173 is a Biax™ L LongLast™ 4-Pin CFL Lamp, single ended, dimmable, external starter required. It is suitable for modular luminaire in commercial premise, shop, office and hotel, alternative use in non-general lighting application such as task light and sign light. Compact, wide range of wattages. High lumen package. Increased surface brightness enabling improved optical control. Lamp can be used with dimmable electronic gear and emergency module. Low mercury content.