RDL SMB-3W Surface Mount Boxes for Decora Remote Controls and PanelsThe SMB 1, 2, 3 and 4 surface mount boxes hold one, two, three or four Decora style products, including RDL remote controls and connector plates. Knockouts are provided for fastening standard metric or North American conduits to the rear of the box and to either the upper or lower surface, depending on the orientation of the box when it is mounted. The sides and top or bottom of the box maintain a smooth surface for a finished appearance superior to