Attributes . Square Box, 29.5 Cubic Inches, 4-11/16 Inches Square x 1-1/2 Inches Deep, 1/2 Inch and 3/4 Inch Eccentric Knockouts, Pre-Galvanized Steel, Welded Construction, Suitable for use without a Bonding Jumper in Circuits Above or Below 250 Volts, For use with Conduit . Names