The Lew Electric SWB-4 is a recessed floor plate with brass screw plug cover, two single gang stamped steel boxes and adjusting sleeves. Inside the floor box are two UL listed 15A-TR-Duplex Receptacles. The adjusting sleeves are adjustable up to 3/4" to accommodate any floor. The box features four water tight close up screw plugs and a durable 1/16" neoprene rubber gasket that goes between the receptacle and plate. The stamped steel box is UL listed.