Hubbell FBMPREC is a pre-galvanized steel mounting sub-plate for SystemOne recessed floor boxes used in concrete, raised-access or wood floors. It provides one StyleLine/decorator opening in a 1-gang horizontal arrangement and fits compatible 2-, 4- and 6-gang recessed floor-box assemblies in the CFB and AFB series. The stamped plate mounts to the box with one screw and supports rectangular or round cover systems. It is cULus listed and identified by UPC 783585191553.