A cover base for an electrical device is disclosed. The cover base includes a base portion with a front surface and a back surface, the base portion also having a first opening extending through the base portion from the front surface to the back surface, the first opening having a size larger than an electrical device face; and an adapter having a second opening sized and configured to receive the electrical device face therein, wherein the adapter is configured to fit within the first opening in the base portion to removably couple to the base portion. Numerous electrical device cover bases including keyholes formed in either the base or the adapter, or both, depending on the arrangement are disclosed.