Professional Tool Reviews for Pros

Garvin Adjustable Depth Device Mud Rings

Garvin Adjustable Depth Device Rings Bring Convenience to Electrical Installations

Garvin designed the Adjustable Depth Device Rings to work with square boxes for mounting switches, receptacles, and devices. Ideal for use in prefabricated assemblies in ceilings, walls, and floors, these device rings adjust for a perfect flush installation to finished surfaces.

What’s the Big Deal?

The Garvin Adjustable Depth Device Rings feature telescoping one-or two-gang inner rings that adjust from 3/4″ to 1-1/2″. This “wiggle room” is helpful when you’re dealing with incorrect mounting depths or other scenarios where the box edge isn’t flush to the edge of the drywall or other finished surface.

Garvin Adjustable Depth Device Rings

The telescoping inner ring adjusts via Phillips head screws inside the device ring. Simply turning the screw will raise or lower the inner ring with 3/4 of an inch worth of play.

Garvin has four models available right now. The AMR1 Square Single Device Ring and AMR2 Square Two Gang Device Rings fit to 4″ square boxes. The AMR11B One Gang Device Ring and AMR211B Two Gang Device Ring fit to 4-11/16″ square boxes.

Features and Benefits

  • Adjustable device rings allow a perfect flush installation to finished surfaces, ensuring that devices are securely fastened and well grounded to rings
  • Telescoping one or two gang inner ring adjusts to finished wall surface for a perfect fit every time
  • Great for prefabricated assemblies
  • UL, RoHS Compliant (two gang models)


You can find the Garvin Adjustable Depth Device Mud Rings anywhere Garvin products are sold, or you can purchase them directly through the Garvin site.

AMR15x4x4 in.0.485 lb4 Square3/4 to 1-1/2 in.$11.33
AMR25x4x4 in.0.1 lb4 Square; Two Gang3/4 to 1-1/2 in.$13.63
AMR111B3.5×5.63×7 in.0.105 lb424713/4 to 1-1/2 in.$25.83
AMR211B5x4x4 in.0.064 lb4-11/16 in; Two Gang3/4 to 1-1/2 in.$28.14

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