Available with or without lamp. (3) E26 medium base sockets 60w max. Fluorescent includes (3) GX24Q-3 base 32 watt triple tube compact fluorescent lamps. May also be lamped with (3) GX24Q-3 base 26 watt triple tube compact fluorescent lamps (not included). Incandescent version dimmable with a standard incandescent dimmer. 120v or 277v.