Octagon Box, 15.8 Cubic Inches, 4 Inch Diameter x 1-1/2 Inches Deep, 1/2 Inch Knockouts, Pre-Galvanized Steel, Drawn Construction, with Non-Metallic Cable Clamps (C-5) and Adjustable Ears, For use with Non-Metallic Sheathed Cable, pack of 24, for Retail