This 4 square steel conduit box is designed for robust electrical installations. Constructed from durable galvanized steel, it features multiple concentric knockouts on all sides, offering flexible conduit entry and easy customization for various wiring configurations. Ideal for both commercial and residential applications, this box reliably houses electrical connections and devices.A 4-inch square steel conduit box with a depth of 2-1/8 inches. It is constructed from galvanized steel and features concentric knockouts on all sides for flexible conduit entry. The internal volume is 30.0 cubic inches.