The Milbank MLB-1212XSC1 are replacement covers for the Milbank series of screw cover junction boxes. Milbanks enclosures and covers are manufactured from 16, 14, or 12 gauge steel. This series of enclosures and covers were made for indoor use to provide protection against contact with enclosed equipment where moisture and dust are not a problem. Milibank designed this series of enclosures for use as a junction box or pull box.