37666 is a Biax™ S 2-Pin non-dimmable CFL Lamp, with internal starter, suitable for wall and ceiling luminaire, in hotel, motel, office building, apartment, building and public area, ideal for task light application also, emergency lighting, enclosed outdoor fixture. Biax™ S compact fluorescent lamp can provide savings of up to 73% in energy costs compared to incandescent lamp. Flat and compact. High luminous efficacy. Up to 73% energy-saving compared to incandescent lamp. 10 times the lamp life of incandescent lamp. Pleasant light, excellent colour rendering.