MSB-1 Single Gang Masonry Box, 16.5 Cubic Inches, 3-3/4 Inches Long x 1-7/8 Inches Wide x 2-1/2 Inches Deep, 1/2 Inch and 3/4 Inch Concentric Knockouts, Galvanized Steel, Welded Construction, For use with Conduit BOX
MSB-1 Single Gang Masonry Box, 16.5 Cubic Inches, 3-3/4 Inches Long x 1-7/8 Inches Wide x 2-1/2 Inches Deep, 1/2 Inch and 3/4 Inch Concentric Knockouts, Galvanized Steel, Welded Construction, For use with Conduit BOX