Designed to provide enough heat for small flocks. 250 watt/120 volt bulb is great for brooding chickens and other poultry. Alloy bulb with non-stick base and 6,000-hour bulb life. Extra thick filaments are enclosed in a high quality bulb made with test tube glass. Additional filament support wires increase the durability and life of the bulb. Red bulb helps deter pecking.