EBW bulb. #B2 blue inside frost photo flood bulb. Cross reference: Ushio (1000264).
This EBW bulb uses 120 volts and 500 watts. It has 6,680 initial lumens, and an average rated life of 6 hours. It has an E26 medium base, and a PS25 lamp shape. It has a color temperature of 4,840K, a C-9 filament, and a blue finish.
It is an incandescent bulb commonly used in photographic applications.