Globe Electric 03917 250-watt R40 Incandescent Heat Lamp Light Bulb, E26 Base, Red This incandescent heat lamp bulb is used with specific recessed light fixtures to dry off after a shower. This 250 watt incandescent light bulb has a lifespan of hours reducing the need for frequent bulb replacements. This incandescent Reflector light bulb is ideal for specialized household use in recessed heat lamps. This heat lamp bulb is appropriate for use in chicken coups. These light bulbs last on average up to 5000 hours.