2 Gang, Adjust-A-Box, Allows Installer To Adjust Box To Any Thickness, 34 CUIN Capacity, Used For Dryers, Ranges & Other Major Appliances, Comes Preset At 1/2″, To Install Clip Included Bracket Onto Any Stud, Turning The Screw Adjusts Box In Or Out To Make It Flush With Any Wall Covering, Patented Design, UL Listed.