Arlington 4×4 Steel Box & Single Gang Box For Concrete Block FSCB44 20/BOX

Optimized for use in concrete block walls, this durable steel box by Arlington Industries is crafted to meet the demands of both modern installations and long-term reliability. With a capacity of 42.3 cubic inches, it features both 1/2″ and 3/4″ knockouts to accommodate a variety of wiring configurations. The innovative spring steel clip design secures the box firmly against the wall when screws are tightened, ensuring stability during installation. Designed with a screw hole pattern that supports both 4×4 and two-gang devices, this box combines functionality with structural integrity, making it a valuable addition to any electrical project.