Mountable with pre-construction or retrofit installations, Self measuring and leveling feature for offset to 1/2" and 5/8" drywall Includes screw and pre-drilled hole for ground wire connection Two different standard size knockouts comply with all US electrical codes for pre-construction and retrofit installations Use box to hide additional electronics, Interfaces with over 20 standard Crimson pivot or full articulating arms for a flush to the wall installation Interfaces with over 50 different standard Crimson mounts including flat, ultra-flat, tilting, pivoting and full articulating