The SBX-ACE is a surface mount stainless steel enclosure designed for mounting an Aiphone door station and an access control device together to create a complete access control package. The unit is constructed of double-layer cold rolled brushed stainless steel, folded and welded. Openings at the bottom of the unit are to allow drainage of moisture when used in outdoor applications. Openings are provided in the back of the unit for mounting and wiring. Three conduit knockouts are provided at the bottom of the unit.