The ProLine XE Power Vent Natural Gas Water Heater maximizes efficiency and provides flexible installation options by using an exclusive 3 position rotatable blower outlet. The GS6-50-YBVIS features a 50-gallon (nominal) tank and a 40,000 BTU gas burner to deliver a first-hour rating of 79 gallons and a recovery rate of 44.7 gallons per hour. A patented Green Choice eco-friendly burner design reduces NOx emissions up to 33% and complies with Low NOx emission requirements of 40 ng/J. All models are equipped with a protected sensor that detects the presence of flammable vapors and automatically disables the burner to prevent ignition. The GS6-50-YBVIS features State’s advanced tank protection, including a stainless steel CoreGard anode rod, Blue Diamond glass lining, and DynaClean automatic sediment-cleaning—designed to help protect the tank from the corrosive effects of water and extend the life of the water heater, which is backed by a 6-year limited tank and parts warranty. State ProLine water heaters are residential products built to commercial-grade standards and are only available for purchase through professional wholesalers and contractors.