Back Box Mount can be located on either the ceiling or the wall, refer to the installation guide for placement recommendations. HALO 3C Back Box may be attached directly to a ceiling, mounted to a standard electrical box, or secured to a 1/2" or 3/4" NPT down pole. Direct surface mounts can be wired using WireMold B1/ V500 or BWH1/V700 surface conduits, or with standard 1/2" electrical conduit using an available adapter.