Low Profile Fixtures provide necessary light and heat to terrariums without the bulkiness of standard domes. These fixtures provide a wide spread of heat and light and work perfect for any reptile. The Low Profile Single Fixture houses one socket for either a Zilla Mini Compact Fluorescent Bulb, Zilla Mini LED Plant Bulb, Zilla Mini Ceramic Heat Emitter or Zilla Mini Halogen Bulb, while the Low Profile Dual Fixture houses two sockets and can hold one of each. Both fixtures come with spring clips that secure the fixture to any screen cover. They also come with an inline cord switch to control the fixture. Bulbs are sold separately, allowing for customization of the needed heat and UVB.