50 Gallon, Tall, Propane Gas Water Heater, 37,000 BTU, Low Nox Emissions, Electronic Gas Control Valve That Provides Precise Temperature Control Operational Status, Piezo Igniter Allows For Easy 1 Hand Pilot Ignition Without Matches, Pex Dip Tube, Glass Lined Tank With Anode Rod Protects Against Corrosion, NonCFC Foam Insulation, Factory Installed Pex Polymer Lined Heat Trap Nipples, Factory Installed Temperature Pressure Relief Valve, Self Cleaning Tank, Water Connection Is Located At The Top Of The Tank, Water Connection Size 34, Vent Size 3 Or 4, Nominal Capacity 50, Rated Storage Volume 48, First Hour Rating 81 Gallons, Unit Dimensions 6034H x 21D, UEF 064, EF 060