This patent pending, unique low profile design allows for maximum vertical growing space, especially in low ceiling applications. Although this fixture features 8 in oval air-cooled fittings, it measures only 5.6 in high! It accepts standard 8 in flexible ducting. State-of-the-art 95% reflective German aluminum interior offers unparalleled output, reflectivity and diffusion. Includes a Sun System? reflector level for easy, consistent, level hanging. Integrated mogul base socket and 15 ft lamp cord. Completely sealed ? features double gasketed (between glass & reflector and glass & frame) tempered glass and a hinged frame to hold glass tightly in place. Hinge feature allows glass cover to swing open for easy access or quick removal. Swing Stop? retention cable keeps glass from abruptly swinging down. Galvanized steel housing with durable powder-coat finish. Captured thumb screws & closure mechanism for ease of use and excellent sealing. US Patents: D698628, D751245. Chinese Patent ZL2015301888152. Patent Pending: 29/552,185.