Rigid Conduit Outlet Box, Type Tapped, Diameter 4 Inch, Depth 1.88 Inch, Number of Hubs 2, Hub Location (2) Side, Hub Size 1/2 Inch, Shape Round, Material Malleable Iron, Finish Zinc Electroplated Chromate Epoxy Powder Coated, Approval UL 514A, Capacity 18 Cu Inch