All residential electric water heaters have the Fused Ceramic Shield lining, a durable glass coating that is fused to the tank’s interior surface at 1600˚F, forming a corrosion-resistant lining for years of dependable protection and use. Screw-in, Direct Immersion Heating Element, 1.65 KW/120 Volts. Non-CFC Polyurethane Foam to prevent heat loss and reduce energy costs. Fused Ceramic Shield Tank for anti-corrosion protection. Side Temperature & Pressure Relief Valve Opening. Non-Metallic, Corrosion-Free Drain Valve. GPH RECOVERY 90° RISE : 6.9 Warranty: 6-year parts, 6-year Tank (Price subject to change without notice. Check stock before order)