Thomas & Betts Co - Steel City 52CADJ 1/2 to 1-1/2 Inch Adjustable Mud Ring

Single Gang Adjustable Mud Ring, Adjusts from 1/2 Inch to 1-1/2 Inch, Pre-Galvanized Steel, For use with 4 Inch Square Boxes Features: Quick-release locking mechanism enables fast and easy adjustment of inner ring.; Measured rule on inner ring for simple pre-fab setting in pre-drywall installations.; Adjustment screws located outside inner ring leaving maximum capacity for devices, won't take up crucial box area.; Locking mechanism located behind outer ring remains safe from router damage or excess mudding; Mounts to any standard 4\" square 2-1/8\" deep outlet box and accepts industry standard devices, including GFCIs.; Patent-pending design, rugged steel construction similar to standard mud ring but with greater flexibility. - Application: Hospital construction where drywall depth often varies.; Ceramic tile walls.; Any other application in which a stud-mounted box and mud ring may require depth adjustment prior to final trim work.