Outlet Box Cover, Black Finish

Outlet box cover mounts over a 4" or 3? octagon outlet box. Can be used at any end feed, I-Connector, L-Connector, T-Connector, X-Connector, or Flexible Connector. Finish: Black Compatible Power Feeds: NT-309, NT-312, NT-313, NT-314, NT-315, NT-316, NT-2312, NT-2313, NT-2314, NT-2315, NT-2316