The Mirage 4 Light Halogen Semi-Flush Rail Ceiling Light is the deliberate use of light to achieve a practical or aesthetic effect. Indoor lighting is usually accomplished using light fixtures and is a key part of interior design. Proper lighting can enhance task performance, improve the appearance of an area or have positive psychological effects on occupants. Metal and glass construction Ceiling mount installation Color Temperature: 2900K 4 light down lighting with dual mount Ceiling Light Includes (4) 50W GU-10 base Halogen bulbs Can be mounted as a semi flush Ceiling Light or chandelier Sloped ceiling adapter included Non dimmable ETL rated for dry locations Bulb Base and Compatibility Bulb Base - Halogen(GU10): A bi pin socket used mostly with 120/230-Volt MR16 Halogen Bulb. The GU10 has a pin spread of 10 mm a twist and lock function Compatible Bulb Types:GU10 Bulb base uses primarily a Halogen bulb but is also available as Fluorescent, LED and Xenon / Krypton Key Features & Innovations ETL Listed Fixtures bearing these marks are certified by these accredited testing laboratories, assuring the construction and electrical components meet or exceed all safety requirements.