SELF BALLASTED 160 WATT R40 MERCURY VAPOR PET LAMP OPERATES IN STANDARD HOUSEHOLD FIXTURES AND PET HABITATS - Solar Brite Pet Lamps offer high UVB output, improve color and health of reptiles, and provide more than 5 times the energy of a 20 watt fluorescent UVB bulb. With lifespans up to 10,000 hours, Bulborama pet light bulbs provide an ideal heat source for all reptiles, keeping pets feeling healthy in their natural cozy habitat. *NOTE* Heat levels may not be appropriate for some mammals, amphibians, or birds.