Completely sealed with double gasketed glass for an air-tight seal. Swing Stop® retention cable keeps glass from abruptly swinging down. Captured thumb screws & closure mechanism for ease of use and excellent sealing. Highly reflective aluminum interior offers excellent reflectivity and diffusion. 6 in integrated air-cooled fittings with bead ring. Galvanized steel housing with major brand powder-coating. EZ Breeze aerodynamic junction box.