Plusrite plug-in compact fluorescents are the ideal choice for the business owner or contractor on a strict budget. This Plusrite 4019 (CFQ13W/GX23/835) double tube CFL operates 13 watts and has a 2 pin, GX23-2 base. High quality double tubes emit beautiful halogen white 3500K color temperature. With a long life of 10,000 hours, this compact fluorescent light bulb will save up to 80 percent in energy and replacement costs. Ideal for facilities, retail displays, hospitality, office, restaurant, and warehouse applications.