Ratchet-Pro 881 Series Multiple Service Floor Box Cover Kit, For 881 PVC Floor Box, Kit Complete With Prewired 20 Amp Duplex Receptacle (Receptacle Can Be Wired As Standard Receptacle or Isolated Ground), Flange And Slide Holder, 881ADP Adapter, and 881DIV Divider, Provided with Wiremold CM Series Open System Unloaded Adapters, Ortronics Series II and TracJack Adapters, Modular Jacks Sold Separately, CAUTION: Not For Use On Concrete Pours Less Than 4 1/2'' (114mm) Deep, Not For Use When Concrete Is The Finished Floor, Use Only For Tile, Carpet, Or Wood Covered Floors