Abstract: An improved lensed fluorescent troffer lighting fixture intended for ceiling mounting and particularly for recessed mounting to a suspended ceiling grid within a shallow plenum, the embodiments of the fixture having dimensions, particularly depth-wise dimensions, which allow installation within the confines of reduced plenums while maintaining fixture quality and retaining desirable characteristics such as minimal lamp image. The present lensed troffers can be manufactured at a high assembly rate due to the ability to snap together on an assembly line the various components of the fixture without the use of separate fasteners. The lensed troffers of the invention are particularly configured for use with T8 fluorescent lamping and low profile electronic ballast.

Abstract: An improved light trap and louver mounting assembly particularly intended to be used as a component of a fluorescent troffer lighting fixture, the invention comprises a light trap structure formed with integral fastening elements which attach component parts of the light trap together, which attach the light trap to the louver and which releasably mount the light trap and louver mounting assembly to a housing assembly of the lighting fixture. The integral fastening elements of the invention act to provide the aforesaid functions without the use of separate fastening elements such as screws, hinges, latches and the like. The light trap and louver mounting assembly of the invention is structurally rigid and imparts desirable rigidity to the louver and to the lighting fixture.