Single gang surface mounted electrical box. Features factory provided raised ground screw location. For use with conduit. UL (Underwriter's Laboratories) listed. No. 583511/2: Width: 2-1/8", Height: 4", Depth: 1-1/2", Volume: 10.3 cu in, Knockouts: (10) 1/2", Material: Steel, Metallic/Non-Metallic: Metallic, Construction: Drawn, Mount Type: Surface Screw Mount, Number Of Gangs: 1 Gang, Shape: Rectangle, Color: Metallic, UL Listed: Yes, Pkg Qty: 1 No. 583611/2: Width: 2-1/8", Height: 4", Depth: 1-7/8", Volume: 13 cu in, Knockouts: (10) 1/2", Material: Steel, Metallic/Non-Metallic: Metallic, Construction: Drawn, Mount Type: Surface Screw Mount, Number Of Gangs: 1 Gang, Shape: Rectangle, Color: Metallic, UL Listed: Yes, Pkg Qty: 1 No. 583613/4: Width: 2-1/8", Height: 4", Depth: 1-7/8", Volume: 13 cu in, Knockouts: (8) 3/4", Material: Steel, Metallic/Non-Metallic: Metallic, Construction: Drawn, Mount Type: Surface Screw Mount, Number Of Gangs: 1 Gang, Shape: Rectangle, Color: Metallic, UL Listed: Yes, Pkg Qty: 1 No. 58371 1/2: Width: 2-1/8", Height: 4", Depth: 2-1/8", Volume: 14.5 cu in, Knockouts: (10) 1/2", Material: Steel, Metallic/Non-Metallic: Metallic, Construction: Drawn, Mount Type: Surface Screw Mount, Number Of Gangs: 1 Gang, Shape: Rectangle, Color: Metallic, UL Listed: Yes, Pkg Qty: 1 No. 583713/430: Width: 2-1/8", Height: 4", Depth: 2-1/8", Volume: 14.5 cu in, Knockouts: (8) 3/4", Material: Steel, Metallic/Non-Metallic: Metallic, Construction: Drawn, Mount Type: Surface Screw Mount, Number Of Gangs: 1 Gang, Shape: Rectangle, Color: Metallic, UL Listed: Yes, Pkg Qty: 1 No. 58371T1/2: Width: 2-1/8", Height: 4", Depth: 2-1/8", Volume: 14.5 cu in, Knockouts: (10) 1/2", Material: Steel, Metallic/Non-Metallic: Metallic, Construction: Drawn, Mount Type: Surface Screw Mount, Number Of Gangs: 1 Gang, Shape: Rectangle, Color: Metallic, UL Listed: Yes, Pkg Qty: 1