SYLVANIA 54685 - BTL - Stage and Studio - T6 - 500 Watt Light Bulbs - 120 Volts - P28s Base - 3050K Halogen light bulbs have a longer life and a higher light output than incandescent bulbs Halogen bulbs have a whiter and brighter light and less blackening, dimmable with most dimmers Applications: interior, interior recessed lighting, track lighting, security lighting OSRAM T6 halogen bulb, 500W, 120V, Base: P28s Medium Prefocus, 3050K, Rated Life (Hr): 750, Luminous Flux (LM): 11000,