Suburban's complete line of reliable water heaters for all recreational vehicle applications Porcelain-lined steel tank for long life Replaceable Anode Rod provides further corrosion protection Fast recovery rate Convenient exterior gas line connection One-piece, die-formed metal control housing protects controls from the weather Copolymer insulation jacket specially fitted to the tank to retain heat Direct Spark IgnitionFeatures an indoor mounted switch which controls the water heater ignition and operation. 12,000 BTU Input rate with a 10.2 gallons per hour recovery rate.