PET LIGHT BULB SB100 WATT R40 FLOOD SOLAR BRITE REPTILE BULB 100 WATTS SELF BALLASTED MERCURY VAPOR PET LAMP Self Ballasted Mercury Vapor Pet Lamp Medium Base, 100 Watts, 120 Volts, R40 Shape 10,000 Hour Rated Lamp Life Maximum Overall Length (MOL): 7.8" Ideal heat source for all reptiles