The Eaton 400/320 Amp Meter Base Socket is a brand new, UL listed electrical box designed for commercial and industrial applications. Made of metal, this rectangular-shaped socket is suitable for wall mounting both indoors and outdoors. With a current rating of 301-350 amps and featuring waterproof capabilities, this socket is ideal for electrical wiring and branch circuit setups. Perfect for businesses and homes, this Eaton socket provides a reliable and secure location for electrical connections.