Iberville steel boxes and covers are manufactured from hot-dipped galvanized steel sheets. Iberville steel boxes incorporate numerous features which result in boxes rugged enough to stand up against the severest abuse. To install a light fixture or to serve as a junction box Mount with screws on the side or on the botton Cubic capacity: 21.0 cu. in. Conduit knockouts 2 ground screws NMD90 (Loomex) cable clamps Made of Steel\”