Size: 4" x 4" x 2-1/8" Made of galvanized steel For 2-1/2" and 3-5/8" steel studs with integral support 4" octagonal steel stud boxes with wraparound bracket Application New work Material Galvanized steel Box Type Steel stud box Construction Type Drawn Cover Included None Knockout Options Side: 2-1/2" x 2-3/4" Bottom: 4-1/2" x 2-3/4" Case Quantities 24