The Carlisle HLRP602 heat lamp bulb is 250 watt and is white. This bulb is made for the Carlisle 8100 and 8200 series heat lamps to keep food warm temporarily. The bulb is made from aluminum. It can operate in environments with minimum temperatures of -40 degrees Fahrenheit and maximum temperatures of 600 degrees Fahrenheit. Carlisle HLRP602 heat lamp bulb is not shatter proof.