This lot includes 10 Steel City 1 gang electrical boxes in silver color, made of durable metal material. The rectangular box shape measures 4 inches in length, 2-1/8 inches in width, and 1-1/2 inches in height, with 10 knockouts  suitable for electrical wiring applications in any room and anywhere. The voltage range is 101-150 V. Ideal for use in electrical boxes & enclosures, electrical boxes, panels & boards, and other business & industrial applications.