EEMAC 1 enclosure. Specifically designed as a recess trim adaptor to fit up to and supplied complete with MBD type masonry boxes to allow set back in masonry/drywall walls for protection to devices and premises occupants. 14 gauge, welded and soft corner bent edges. Round corners on surface sides. Punch to fit up to device screw fitting. Fast and easy to install - MBD box is supplied and installed by others. ASA 61 grey powder coat finish.