SWC OCR-400341 Oct CncrtBx 4″ Dp (8

4in deep octagon concrete boxes with (8) 3/4in & (8) 1in side knockouts are used in poured concrete construction. They are installed on wooden or steel concrete forms once the forms are removed the boxes and conduit are buried in concrete and the end is open to the room wall or ceiling ready for wire pulling. Garvin’ extra long external mounting tabs allow an easy installation by nailing or screwing the boxes to wooden or steel concrete forms.