Oil Fired Water Heater Storage Tank; Applicable Standard UL, CUL, NFPA 31/ANSI Z.21.10.1, ASHRAE, AHRI, Gama; Inlet/Outlet Connection 3/4" Threaded x 3/4" Threaded; Relief Valve Details T and P Relief Valve Factory Installed; Tank Material Steel; Tank Inner Lining Cobalt-Enriched Glass-Lined; Pressure Rating 150 PSI; Tank Dimensions 20" Diameter x 43-1/4" Height; Tank Capacity 33 Gallon; Tank Warranty 5 Year Limited (Residential), 3 Year (Commercial); ASME Code No; Anode Rod Material Dual Magnesium; Hand Hole Cleanout Yes; Inclusions/Features Dual Magnesium Anode Rods, Heat Exchanger, Turbofins, Drain Valve; Application Residential Oil-Fired Water Heater; Return Pipe Diameter 3/4" Threaded; Maximum Temperature Setting 160 Deg F; Working Pressure Rating 150 PSI; Test Pressure Rating 300 PSI