1MB-P

Single Gang Masonry Box - 22.0 Cubic Inches - 3-3/4 Inches Long x 1-7/8 Inches Wide x 3-1/2 Inches Deep - 1/2 Inch and 3/4 Inch Concentric Knockouts - Galvanized Steel - Welded Construction - With #12 AWG Solid Ground Wire Pigtail.