Triangle Bulbs T20931 - 250R40/RED, 250 Watt, R40 Reflector, 120 Volt, Red, Standard E26 Base, Incandescent Heat Lamp Light Bulb 250 Watts, 120 Volts, Red Heat Lamp Medium Base (Standard Household Size) 5,000 Hour Rated Incandescent Floodlight Bulb Lasts up to 5 Times Longer Than Standard Heat Lamp Light Bulbs 5 Filament Supports, Pure Tungsten Coil, Power Surge Resistant