Single Gang Deep Boxes provide additional box capacity and include 1/2", 3/4" and 1" entry hubs for maximum installation flexibility. Made from durable and lightweight PVC, FD-Series boxes are weatherproof, corrosion and chemical resistant and feature brass inserts and screws. Utilities cable communications residential airports subways bridges & tunnels mines marinas water/sewage treatment plants pulp & paper industries street & highway lighting food processing plants agricultural parking garages car washes fish plants steel mills Made from durable PVC, lightweight with high impact and tensile strength Deep sides for more wiring space Brass inserts and screws for longer lasting life