US Patent 7307213 Horizontal electrical box with internal mounting arrangement

An electrical box with a snap fit panel including a mounting arrangement. The panel can snap fit against an opening in the sidewall of the electrical box to form an electrical enclosure with an internal mounting arrangement for mounting the electrical box in either new work or old work applications. Providing a mounting arrangement integral with the panel instead of integral with the box provides a significantly larger internal volume than prior art one-piece molded electrical boxes with integral internal mounting arrangements. The internal mounting arrangement provides fasteners internal to the electrical box, thereby enabling retrofitting an old box with no disruption to the surrounding wall.