Featuring pinched quartz tubes that are designed to hold the filaments secure, the 300 W rough service double-ended tube halogen light bulbs are recommended for use in interior and exterior 120 V lighting applications. The bulbs emit 4500 Lumens light output. 3000 K warm white light provides cozy, inviting light. These ultra-bright, dimmable bulbs are ideal for work lights, pool and spa and outdoor security lighting. They offer an average life of 4000 hr and include plated contacts that resist corrosion. Use Feit Electric BPQ300T3/CL halogen bulbs for bright, reliable light.