Sylvania 15737 300M/IF 120V Incandescent bulbs are dimmable bulb and din not a have poor quality light as low energy bulbs best used in household and commercial lighting, decorative &amp; advertising lighting, portable lighting Stock now on Incandescent bulbs before 2012 phase out of incandescent light bulbs Sylvania PS35 incendescent bulb, 500W, 120V, Base: E39 Mogul Screw, Rated Life (hrs): 750, Luminous Flux: 5860