Incandescent Lamp, PS25D, 3 Contact Mogul Screw (E39D), Lumens 1250/2650/3900, Watts 100/200/ OVERALL LENGTH: 2.750 INCHES MAXIMUM FILAMENT DESIGNATION: C-2V LIGHT OUTPUT RATING: 2500.000 BEAM CANDLEPOWER NOMINAL SINGLE RATING AVERAGE LIFE RATING IN HOURS: 400.0 FILAMENT HEAVY DUTY SERVICE RATING: NOT RATED EMITTED LIGHT CHARACTERISTIC: COLORLESS VOLTAGE RATING: 48.000 VOLTS NOMINAL WATTAGE RATING: 80.000 WATTS BASE STYLE: A39 TWO SLIP-ON TERMINALS BULB STYLE: B17 PAR BULB DESIGNATOR: PAR-36 BULB LIGHT TRANSMISSION CHARACTERISTIC: TRANSPARENT LIGHT INTENSITY DISTRIBUTION FEATURE: PARABOLIC REFLECTOR CURRENT RATING FOR WHICH DESIGNED: 1.667 AMPERES NOMINAL RATED AVERAGE LIFE: HOURS BURNING POSITION: ANY ACCEPTABLE SPECIFICATION/STANDARD DATA: 08108-4340 MANUFACTURERS STANDARD