Southwire BMB3U 4 in. Square 3-Position Box Bracket for Adjustable Depth Device Rings
Garvin BMB3U is used for both 4 in square and 4-11/16 in Square Boxes when mounting adjustable depth device rings. It's versatile design allows you to mount up to (3) 1 gang (AMR1) 2 gang (AMR2) or square to round (AMR0) adjustable depth device rings at a time. This multipurpose bracket can also be used with traditional 4 in and 4-11/16 in square device rings.
Garvin BMB3U is used for both 4 in square and 4-11/16 in Square Boxes when mounting adjustable depth device rings. It's versatile design allows you to mount up to (3) 1 gang (AMR1) 2 gang (AMR2) or square to round (AMR0) adjustable depth device rings at a time. This multipurpose bracket can also be used with traditional 4 in and 4-11/16 in square device rings.
