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 pin and corresponding cover and base hinge members wherein the removable 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; and 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.