50 Gallon, Natural Gas, Short Power Vent Water Heater, Energy Star Qualified, 40,000 BTU, 3 Position Rotatable Capability Blower, 120V Power Cord, Must Be Electrically Grounded, Horizontal & Vertical Vent Runs Up To 180 Equivalent Feet With 4" Diameter Venting, Schedule 40 Vent Piping System With PVC, ABS, Or CPVC Pipe, Vent Distance Up To 180', With 4" Pipe, 2" Insulation, Self Cleaning Diffuser End Pex Dip Tube, Glass Lining, Hot Surface Igniter, No Standing Pilot, First Hour Rating 90, Recovery At A 90 Degree Rise GPH 44.7, UEF: 0.72, EF: 0.70, Anode Rod, Installed T & P Relief Valve, Electronic Gas Control For More Precise Temperature Control, Unit Dimensions : 60.13"H To Top Of Blower x 24"D, 6 Year Tank & Parts Limited Warranty, 1 Year Labor Allowance Not For Mobile/Manufactured Housing, Void If Installed In Mobile/Manufactured Home, 198 LB, Up To 10,100' Elevation.