150,000 BTU "Helix VLT DK" Series Hot Water Modulating Vertical Laser Tube Natural Gas-Fired Wall Mounted Condensing Boiler W/Stainless Steel Heat Exchanger, Volts:120, Hertz:60, Phase:1, Efficiency:95, FLUE Size:3" Diameter, Max Operating Pressure:150 PSI, Max Water Temperature:195F, Ignition Type:Direct Spark, Return/Supply Water Connection:11/4"N.P.T., Gas Connection:3/4"N.P.T., Condensate Drain Connection:3/4"N.P.T, Maximum Relief Valve Capacity:150 Lbs/Hr, Input/Output BTU's:150,000/139,000 BTU/Hr, AHRI Net Water Rating:121,000, Gas Supply Pressure Min/Max:3"W.C./13.5"W.C., Dims:42"H X 23"W X 16"D, Weight:206 Lbs, In Mfg Box, Made In USA.( Mounting Bracket Included(1))(Does Not Include Pump)