Current Usa ACU02019 SunPaq SmartPaq 10000k/460nm Bulb with 10Q Square Pin, 18-watt SunPaq SmartPaq 18-watt bulb SunPaq lamp is handcrafted with the best components, phosphors and rigorously tested, setting a new standard in compact fluorescent lighting SmartPaq bulb features both 460nm actinic and 10,000K daylight spectrums and GY10Q square gold-plated pin configuration High quality Philips lamp filament provides the right amount of kick to fire the lamp and maintain high lumen output Measures 10-1/2-inch length by 1-3/4-inch width by 1-inch height