The Rheem Performance 50 Gal. ultralow NOx natural gas power vent water heater provides an ample supply of hot water for a house hold size of 3-people to 5-people. The 38,000 BTU/hour ultra-low NOx burner has a recovery rate of 36.4 Gal. at a 90-rise. The flexible venting options offer a wide range to fit most installations. Long venting lengths up to 100 ft. with 2 in. or 3 in. PVC, ABS, or CPVC vent pipe options. This unit features a durable spark-to-pilot igniter and installed temperature and pressure relief valve. California residents see Prop 65 WARNINGS California residents, this water heater meets or exceeds ultra-low NOx (ULN) emissions requirements for all air quality management districts More hot water at a low operating cost Exclusive air/fuel shut-off device for double protection Maintenance free - no filter to clean Disables the heater in the presence of flammable vapor accumulation PVC, ABS or CPVC vent pipe options Vertical or horizontal termination Premium grade anode rod provides long-lasting tank protection Whisper quiet blower 6-year limited tank and parts warranty Energy Star Call 1-855-400-2552 before noon for same-day installation service in most areas, or Features Item Weight 173 Household Size 3-5 Rated Tank Capacity (gallons) 48 Maximum Temperature (F) 160 Efficiency Level High Gas Type Natural Gas Returnable 90-Day Tank Lining Material Glass Water Heater Features Overheat Protection,Pilot Light Window,Pilot Reset Button,Temperature Pressure Relief Valve,Ultra LoNox Recovery Rate at 90F Rise (gallons/hour) 38.4 Minimum Temperature (F) 45 °F Wattage (watts) 0 Tank Warranty 6 Year Vent Type Power Vent Water Heater Profile Tall Product Weight (lb.) 173 lb Finish Family Gray Indoor/Outdoor Indoor Fuel Type Gas Application Type Residential Commercial/Residential Residential Pack Size 1 Uniform Energy Factor 0.68 Nominal Tank Capacity (gallons) 50 BTU Rating 38,000 Product Width (in.) 21.75 in Product Height (in.) 66.375 in Product Depth (in.) 21.75 in Water Connection Size (in.) 0.75 Tank Valve Size (in.) 0.75 Part Warranty 6 Year Certifications and Listings CSA Listed,FVIR Certified Labor Warranty 1 Year