Durable Heating Elements - Dual 4,500-watt commercial-grade heating elements deliver reliable and efficient hot water;Sturdy Build - Long-lasting lower Incoloy stainless steel element;HUD Compliant - Approved for use in mobile homes/manufactured housing;Corrosion Protection - Patented Blue Diamond glass tank lining protects against corrosion;Auto-Cleaning Feature - DynaClean automatic cleaning system protects against sediment build-up;Long-Lasting Anode - Stainless steel CoreGard anode rod protects against corrosion longer than ordinary anodes;Simple Drainage - Commercial-grade brass drain valve for durable and easy operation;Factory-Installed Relief Valve - CSA certified and ASME rated T&P relief valve is factory-installed;Peace of Mind - 10-year limited tank and parts warranty for added peace of mind