This PROSERIES electrical utility box offers robust construction for your electrical needs. With a generous 42.0 cubic inch capacity and multiple knockout sizes, it provides flexibility for various wiring configurations. Its durable steel material and screw cover mounting ensure a secure and reliable installation.The PROSERIES 72171-1 electrical utility box is a square steel box measuring 4-11/16 inches by 4-11/16 inches with a depth of 2-1/8 inches. It features 42.0 cubic inches of internal volume and includes knockouts for 3/4 inch and 1 inch conduit. The box is designed for screw cover mounting and has 17 outlets/knockouts in total, consisting of eleven 1/2 inch and six 3/4 inch sizes. It is manufactured by ABB (Thomas and Betts).