The 18" Naturalistic Terrarium Hood includes a built-in reflector and two sockets for heat and UVB lamps. Additional Information: This hood fits all 18" wide Naturalistic Terrariums UVB: Use with Zoo Meds ReptiSun-« 5.0 UVB Compact Fluorescent Lamp for both UVB and UVA. Heat: Use Zoo Meds Daylight Blue Reptile Bulb for daytime heat (up to 60 watts) or Zoo Meds Nightlight Red Reptile Bulb for 24 hour heat (up to 60 watts).