70.0 Cu. In. Four gang electrical box for use with nonmeatllic sheathed cable - Machine tapped device holes, slot provision for low voltage divider, rectangular exterior for easy cut-in, rigid hard box construction, no distortion with high temperatures, shatter resistant with low temperatures - Old work residential construction 2 HR fire resistive walls - Fiberglass reinforced polyester - thermoset box - Size: D=3 9/16", W=7 11/16", H=3 3/4" - Mount with Metal wing brackets/metal ears wall compression