An example disclosed protective shell for a device includes a first housing and a second housing. The first housing including a front perimeter edge, a side wall adjacent to the front perimeter edge, at least one recess area adjacent to a ledge, and at least one guide rail. The second housing including at least one tab and at least one receiving rail. The first housing and the second housing combine to secure the device by meshing the at least one guide rail and the at least one receiving rail, and securing the at least one tab to the ledge such that the tab is located within the at least one recess.