ECT 500 Watt/120 Volt frosted flood light bulb. with E26 Edison screw base. Check your fixture for wattage capacity.
Code ECT Application Floodlight, darkroom, projector Watts 500 Volts 120 Color Temperature 3200°K Average Life Hours 60 Approx. Lumens 13650 Base Type E26 Medium screw base Filament Type C9 Length 6.94" (177mm)