The nVent CADDY FB16 flat rigid box support is rigid and completely flat with no offset, providing flexibility and strength within the stud wall. Regardless of the mud ring combination you're planning for, the FB16 bracket is able to accommodate and provide a mounting option. Because it is designed completely flat, you have multiple configuration options, limiting SKUs needed on a job, saving time. As part of the comprehensive line of nVent CADDY in-wall products, the FB16 bracket delivers versatility and efficiency.