Square D Meter Centres provide a compact and versatile metering and distribution centre for today's residential, commercial, and industrial markets. All metering stacks have factory installed meter sockets and vertical bus bars, requiring only onsite installation of circuit breakers and main bus links. This cover plate is a Square D Meter Centre meter stack accessory. It is used for 240V 100A 7 jaw meter socket and breaker to cover the meter and breaker section. It can be used on MC74LB.