Arlington Industries' FLBC4580 In-Box Cover Kit
Arlington Industries’ FLBC4580 in-box cover kit fits receptacles installed in a 41/2–in. concrete floor box. The brass or nickel-plated metal covers have thin, stamped steel flanges that deliver flush-to-the-floor receptacle installations. The recessed covers install into the box, reducing trip hazards caused by plugs. They come with a divider for power and low-voltage in the same box.