The FCS bulb is a 24 volt, 150 watt halogen projection lamp with a G6.35 bipin base.
Inside the clear quartz T4 shape glass is an FC6 filament which produces 4500 initial lumens. The bulb operating position is vertical (with 45°) base down.
The FCS is found in a wide range of applications including photo enlargers, photo floods, microscopes, medical equipment, microfilm readers and projectors.
Cross reference brands and part numbers: Ushio 1000492, GE 13598), Philips 20607-8, Osram 64640 HLX.
Possible substitute: FDV (less light, more life, less heat).
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."