The Deep Dome Lamp Fixture features an extra long reflector dome that extends beyond the face of the lamp, preventing the lamp from protruding. The highly polished aluminum dome interior greatly increases UVB + UVA output. Bulb not included. Features include: a ceramic socket designed for use with lamps up to 160 watts, a polished aluminum dome for maximum light and heat output (increases output by up to 30%), and an in-line on/off switch for greater convenience.