Works in 3/8 inch to 1 1/2 inch thick wall or Ceiling applications
Steel old-work wings allow for secure mounting of box and device to wall
Small footprint is covered by most popular life safety devices
Mounting holes on retro-ring are specific to alarm devices
Description
RACO Retro-Ring is used to Mount a 4in. square steel junction box in existing walls. Excellent for Mounting life safety detection and notification devices. Mounting is independent of stud or wall support locations.