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