Enclosed box-like housings

In an enclosed, box-like housing for a light fixture or the like, which includes a skeleton frame including elongate side and end frame members which are hollow, and corner fittings connecting each side frame member with a pair of end frame members, so as to form between opposite pairs of side and end frame members, and panels for closing the openings, the improvement comprising each corner fitting including a base having a cube-shaped body having opposite end walls, and adjacent pairs of inner and outer side walls, first and second legs extending perpendicularly from the inner side walls of the body, each leg having inner walls which form substantial continuations of one end wall and one inner side wall, respectively, of said body, an end wall perpendicular to the inner walls, and a flange extending from one inner wall of the legs to provide a substantial continuation of the other inner wall of the legs, and having outer edges which form substantial continuations of the end walls of the legs, first and second prongs extending perpendicularly from said end walls of the first and second legs, respectively, and thus with respect to one another, and having side walls which are spaced inwardly from the side walls of the legs, a third prong extending perpendicularly from said one end wall of the body, and thus with respect to the first and second prongs, and having side walls which are spaced inwardly from the side walls of said body, the ends of said pair of end frame members being telescopically received over the side walls of the first and second prongs so as to substantially abut the end walls of the legs from which the prongs extend, the end of said side frame member being telescopically received over the side walls of the third prong so as to substantially abut the end wall of the body from which said third prong extends, and said end frame members having first flanges which form substantial continuations of the flange on the legs of the base, and second flanges which form substantial continuations of flanges on said side frame members, the flanges on each frame member being coextensive of the length of the frame member and having end edges flush with the ends of the frame member and perpendicular to the length thereof, the end edges of one flange on each end frame member substantially abutting the side edge of a flange of a side frame member, the end edges of the other flange on each end frame member substantially abutting one edge of the flange on said legs, and the end edges of the flanges of each side frame member substantially abutting the sides of the legs from which said flange extends, whereby the outwardly facing surfaces of the flanges on the bodies and frame members thereby form recessed ledges substantially continuously about the openings in the frame on which the panels may be received.