Zoo Med ReptiSun T5 HO Terrarium Hood (48") 48 inch Zoo Med ReptiSun T5 High Output bulb The UVB and UVA from our long time trusted ReptiSun lamps in a stronger output version Energy efficient T5 HO electronic ballast for rapid start and maximum lamp performance Highly polished curved reflector for increased lamp efficiency Ideal for larger and taller enclosures as it provides UVB penetration at greater distances