A plurality of approaches for forming a horizontal and vertical electrical device cover including 1) providing hinge members on opposing sides of the cover that allow the cover to pivot along adjacent-sided axes for horizontal and vertical mounting; 2) providing a removable or selectively movable pin and corresponding cover and base hinge members wherein the pin may be placed along either the horizontal or vertical axis for selective horizontal or vertical mounting; 3) providing a pivoting hinge arm that is pivotable between adjacent sides of the unit for selective horizontal or vertical mounting; 4) providing selectively attachable hinge members that may be attached by the installer at the time of installation to choose between horizontal or vertical mounting configurations.