Combining the best of both worlds, the 5006 Up and Accent Fixture with shroud comes factory installed with Vista's new MR-16 LED lamp. Boasting the energy savings of LED technology and the flexibility and performance of MR-16 Halogen lamps, Vista's new MR-16 LED lamps come in your choice of 4.5W (equivalent to 20W halogen) or 5.5W (equivalent to 35W halogen) factory-installed. This low voltage up and accent fixture is constructed of die-cast, copper-free aluminum for strength and reliability. The fully rotatable shroud is compatible with accessories like lenses and louvers. At the base of the housing is a high temperature silicone diaphragm gasket which incorporates an innovative air valve that prevents a vacuum from forming within the fixture during dramatic temperature changes.