The Lew Electric SWB-4-LR-A is a recessed floor plate with aluminum flip lid 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 flip lids and a durable 1/16" neoprene rubber gasket that goes between the receptacle and plate. The stamped steel box is UL listed.