The 12" Naturalistic Terrarium Hood includes a built-in reflector and socket for heat or UVB lamps. This hood fits all 12” wide Naturalistic Terrariums (Zoo Med items# NT-1 or NT-2). Additional Information: UVB: Use with Zoo Med’s Reptisun® 5.0 UVB Compact Fluorescent Lamp for UVB and UVA Daytime Heat: Use Zoo Med’s Daylight Blue Reptile Bulb (up to 60 watts) 24 Hour Heat: Use Zoo Med’s Nightlight Red Reptile Bulb (up to 60 watts)