Square holes/M6 cage nuts accommodate 19" equipment. Durable black powder coat finish. Available in 3U and 6U versions. Integrated cable management tie-downs. Mounts on 16" and 19.2" wall stud centers. Short on space? Make the most of any tight and cluttered wiring closet with a flushmount wall bracket. Perfect for use in SoHo (small office/home office) to enterprise size networks.