UNILETS Outlet Box, Number Of Outlet: 4, Material: Malleable Iron, Size: 3/4 IN, Cable Entry: (4) 3/4 IN Tapped Openings, Knockouts: Yes, Height: 4-1/2 IN, Width: 5.69 IN, Depth: 3-1/8 IN, Finish: Triple-Coat (Zinc Electroplate, Chromate And Epoxy Powder Coat), Standard: UL 514A , UL File Number E2527, NEMA FB-1, For Use With Threaded Metal Conduit