50 Gallon natural gas with power-vent 3-position (9, 12 and 3 o'clock) rotatable blower. Hot surface ignition, electronic gas control, no standing pilot. ABS (acrylonitrile butadiene styrene), PVC (polyvinyl chloride), and PP (polypropylene) vent material. Vent lengths up to 125' with 3 inch diameter venting (180 equivalent feet with 4 inch diameter venting); subtract 5' from vent length with each installed vent-elbow. IMPORTANT NOTICE: Allow an additional 4 inch to 10 inch to height dimension when installing a 90 deg (degree) vent-elbow on blower in 12 o'clock position. 120V (volt) required. 2" insulation. Factory installed T & P (temperature & pressure) valve. 6 year tank and parts limited warranty. Heater dimension height from floor to top of blower: 69-3/4 inch, Diameter 22 inch.
