Product CM-4CB-F 0314-0880 4 Octagon Concrete Ring Specifications Cable Entry KO Color Galvanized Depth 4 Inches Diameter 4 Inches Features The 1/2", 3/4", 1” side knockouts and mounting tabs allow for easy installation. They are constructed from 16 gauge galvanized steel. Insulation None Knockouts Side : (8) 1/2" (4) MKO , Bottom : (2) 1/2" (2) MKO Material 16G Steel Series CM4CBF Standard UL Type Concrete Box, Octagon UPC 00190010381197
