Cubic modular metal enclosures are constructed of four aluminum extrusion corner rails, which also serve as the cubic boxes' colons, as well as four sides, top, and bottom panels. 6063 aluminum is used for the extruded aluminum corners, as well as the sides, top, and bottom portions. Two extruded aluminums are used in some of the models. The corner ends have threads for the screws, which makes it easy to open and close the modular case without damaging it. With the elecronics housing modifications, it gets the maximum utilization area for the application.