Halco R40FL500/HG Medium Base R40 Bulb, 500-watt, 120-volt Medium base R40 incandescent reflector flood bulb fits many incandescent pool light fixtures Flood lamp R40 light bulb to repair your pool and spa hot tub Features lumens approx. 5400, average rated life in hours 2000, medium base, FL beam type, reflector lamp finish Comes in 500-watt, 120-volt Measures 6-3/4-inch length