Retro Ring 4 Inch Square Old Work Mounting Ring For BX Alarm Devices Steel Old Work Wings For Secure Mounting Easy Install Fits Three Eighths To One And A Half Inch Wall Or Ceiling Thickness Silver Finish Pack Of 20
✔️ Fits 9.5-38.1 mm wall thickness; 4 in ring, 20-pack
The retro ring mounting accessory secures a 4x4 in steel junction box inside existing walls, making it ideal for life safety detection and notification devices. Great for retrofit installations where the wall is finished and you need reliable mounting without studs.
✅ 4 in square steel retro ring for mounting BX alarm devices
✅ Suitable for 9.5-38.1 mm wall/ceiling thickness
✅ Old-work wings provide secure, stud-free installation
✅ Small footprint fits common life safety devices
✅ Mounting holes sized for alarm devices
✅ Silver finish; pack of 20
💡 What is a common use for a 4 inch square old-work mounting ring with BX alarm devices?
It provides a retrofit mounting option that secures a standard 4x4 in junction box inside existing walls for life-safety equipment.
- retrofit mounting for life-safety devices - secure old-work wings for drywall installation - fits 9.5-38.1 mm wall thickness and standard 4x4 in boxes✝️