Arlington Industries’ HC1742 nonmetallic hole cover kit covers hole openings from 1¾ –4¼ in. It has retaining clips that allow for adjustment to fit a range of hole sizes. The reference scale inside the cover allows for precise sizing to the hole diameter. Attach the retaining clips with screws.
Arlington Industries’ FLB6230MBLR cover kit allows for flush receptacle installation and is designed for placement on a concrete floor box. It has flip lids and includes a 6-in. brass cover, gasket, receptacle and a leveling ring. It fits most 41/2-in. concrete boxes.