Middle Atlantic MPR-8A Modular Power RacewayCustomize Your Power Distribution The Middle Atlantic MPR Modular Power Raceway system provides the flexibility to create custom power solutions with ease. The MPR 8A can accommodate up to eight MPR power or control modules, allowing you to tailor your power distribution to your exact needs. Model: MPR 8A Capacity: Holds up to eight MPR power or control modules Features: Modular design for custom power solutions