Current Usa ACU02018 SunPaq Dual Daylight 6700k/10000k Bulb with 10Q Square Pin, 18-watt SunPaq dual daylight 18-watt bulb SunPaq lamp is handcrafted with the best components, phosphors and rigorously tested, setting a new standard in compact fluorescent lighting Dual daylight bulb features both 6,700K 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