Box Extension-ring Steel 4" X 4" X 1-1/2" 12-knockouts 1/2"
Box Extension-ring Steel 4" X 4" X 1-1/2" 12-knockouts 1/2"
SKU: @BOXEXT4STL112D12KO12
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For adding additional cubic capacity or as an outlet box for surface conduit. 12, 1/2" side knockouts, drawn metal, suitable for use in 2-hour fire rated walls. *STEEL *1-1/2" Deep - 22.5 Cubic Inches *Size Ins.=4