The XXXtreme features a low profile design and is sealed for more efficient cooling. It is equipped with an imported AlumaBrite reflective aluminum insert, regarded by gardening professionals as the industry standard for quality. This attention to detail and quality ensures maximum uniformity of light output while simultaneously minimizing hot spots. The specially designed aerodynamic socket alleviates wind drag and maintains steady airflow. XXXtreme 8" measures 38.75"" x 29.875" x 11" Vent to vent-42"