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Masonry Box Extension Rings

Masonry Box Extension Rings by Garvin easily mount to existing masonry boxes in wall, creating extra device and wiring space.  Proven effective in remodeling jobs to tap existing power in wall box and surface mount conduit runs. 

Garvin Industries’ open back design allows for easy addition of multiple devices, numerous wires, switches and other electronic and electrical devices.  Available in 2-½” or 3-½” to fit any device count. 

Manufacturer: Garvin Industries
Web Site:

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