
Masonry Box; Depth 3-1/2 Inch; Height 3-3/4 Inch; Width 5-9/16 Inch; Knockout Location (6) Bottom, (4) Sides, (12) Ends; Knockout Size (1/2 Inch-3/4 Inch) Concentric; Number of Knockouts 22; Number of Gangs 3; Material Steel; Capacity 66.5 Cubic Inch; Approval UL