High-grade steel and a smart construction. The Cobalt 4 Air-Tight Line Voltage New Construction Housing by Nora Lighting is a piece designed to minimize energy usage and make the installation process as seamless as possible. The ease of installation comes in the form of quick electrical connectors and adjustable bar hangers. Its versatile in the variety of bulbs and trims it allows with its adjustable socket. Gaskets installed in the housing prevents unnecessary air flow from your room into the ceiling, saving energy as a result.