16.0 Cu. In. Single gang electrical box for use with nonmeatllic sheathed cable - Machine tapped device holes, rigid hard box construction, rectangular exterior shape, 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=2 7/8", W=2 3/8", H=3 1/4" - Mount with metal ears - Speed Klamps™ bulk packed