SINGLE SOCKET HOOD, The 12 naturalistic terrarium hood includes a built-in reflector and two sockets for heat of uv lamps, This hood fits all 18 wide naturalistic terrariums (zoo med items# nt-3 or nt-4), , UPC : 097612325508, Size : 18 INCH, Length : 18, 7, Width : 3, 7, Height : 5, 6, Product Type : Reptile - Light Fixtures / Strip Lights, Shipping Dimensions: 18, 7x3, 7x5, 6 SKU: BC012069