The Sylvania 20871 42-Watt Triple Tube Compact Fluorescent Lamp provides high-efficiency, bright cool white lighting for commercial and industrial fixtures. Its 4-pin GX24q-4 base and design for high-frequency electronic ballasts ensure reliable performance and compatibility with a wide range of energy supplies. With a 3500K color temperature and 82 CRI, it delivers excellent light quality for detailed tasks. Perfect for use in offices, retail spaces, and warehouses where long life (12,000 hours) and energy savings are priorities.