Zoo Med 160 Watt Mercury Vapor Lamp and Blue Spotted 8.5 Inch Deep Jungle Dome Use With Terrariums Provides A Basking Lamp For Reptiles, Amphibians, Small Animals, Birds, And Farm Animals One Zoo Med 160 Watt Mercury Vapor Lamp And One 8.5 Deep Jungle Dome Lamp Fixture Zoo Med lamp is self ballasted, Emits UVA and UVB, fits Blue Spotted 8.5 Lamp Fixture. These lamps need specific line voltages, they cannot be used with dimmers/rheostats Convenient On/Off switch & UL listed ceramic socket. Avoid overheating your terrarium and pets by using lamps, bulbs, and heat emitters correctly size for your environment. 160 watt maximum lamp / bulb size. Designed for use with Blue Spotted Ceramic Heat Emitters, 10.0 UVB, Sunning lamps, Infrared & Day lights, and Mercury Vapor lamps. Easy to install. Direct concentrated heat & light to desired area Deep Jungle 8.5 Inch Dome Lamp Fixture by Blue Spotted. Use the reptile lamp fixture with terrariums and to heat reptiles, amphibians, small animals, birds, and farm animals!