The F137 Series luminaire shall consist of an injection-molded UV stabilized tubular diffuser, a spun aluminum hood assembly, an internal optical system and a slip fitter (capital). The hinged hood shall rest on a cast aluminum ring welded to extruded aluminum struts. The diffuser shall be held in place with positive pressure applied by the hood assembly. As an option, lower third of the diffuser can be frosted. The fitter shall be made of cast aluminum and shall house the LED assembly. The LED shall feature quick disconnect plugs for easy maintenance. The LED shall be factory wired, tested and mounted on a keyholed cast aluminum plate. All electrical components shall be UL listed and labeled.