Zoo Med's Naturalistic Terrarium Hood is designed to fit all 12 inch wide Naturalistic Terrariums (NT-1 & NT-2), or can be used with any other terrarium that size permits. This hood can hold one ReptiSun 5.0 Compact Fluorescent UVB lamp or one incandescent heat lamp up to 60 watts. A built-in reflector allows for increased heat/UVB penetration in your terrarium. An On/Off switch is conveniently located on the back of the hood. Two 12 inch hoods may be used to provide both heat and UVB for your terrarium animals. Dimensions: 12"L x 5"W x 3.25"H.