FIG. 1 is a front orthogonal view of an electronic equipment enclosure 10 with a top panel 30 thereon in accordance with one or more preferred embodiments of the present invention, and FIG. 2 is a front isometric view of a frame structure 12 of the electronic equipment enclosure 10 of FIG. 1 without the top panel 30 installed thereon. As perhaps best shown in FIG. 2, the frame structure 12 includes four vertical support posts 16, upper and lower front cross members 17,18, upper and lower rear cross members 19,20 and three pairs of side cross members 21,22,23. Each vertical support post 16 includes a plurality of cross member attachment apertures at each end. Two of the vertical support posts 16 are connected together at their upper and lower ends by the upper and lower front cross members 17,18, respectively, and the other two support posts 16 are connected together at their upper and lower ends by the upper and lower rear cross members 19,20, respectively. The front cross members 17,18 and their respective support posts 16 thus define a front frame 24, and the rear cross members 19,20 and their respective support posts 16 define a rear frame 26. The front and rear frames 24,26 may then be connected together at their respective corners by the upper, middle and lower side cross members 21,22,23.