Concealed and surface- mounted systems device installation can be installed on the surface of the wall or in a concealed fashion in cavity walls. The systems are matched and designed to the various installation requirements and practices. Be it individual device installations, a switch/socket combination or the installation of a multiple socket, the right installation material is available for any requirements. Besides the standard accessory sockets, two support plates with screw fastening or fastening claws and the appropriate cover frames are available in the widths ½ module and 1/1 module. set consists of : -Standard device installation 71 mm - System device installation, 1.5x - System device installation, double - System device installation, triple - Modal net – surface-mounted housing - Modal net – cavity wall installation - Modal net – accessories - Modal net - complete units Bornika is the exclusive agent of OBO Bettermann in the fields of consultation, sales and distribution of power industry products including Device systems (EGS) is active.