75 Gallon High Input Residential Atmospheric Vent Natural Gas Water Heater,BTU Input:76,000, Capacity:75 Gallons, 1st Hour Rating(Gallon):135, Venting: Atmospheric, Vent Size:4", Gas Connection:1/2" N.P.T., Water Connection Size: 1" N.P.T., Recovery Efficiency:80%,Test Pressure:300 PSI, Working Pressure:150 PSI, Dims:623/8"H X 26" Dia, Overall Depth: 291/4", Weight:240 Lbs, In Bulk, Made In USA.* Note: This Unit Has A Piezo Ignitor So There Is No Need For External Electricity. ***Ships Via LTL Freight And Does Not Qualify For Free Ground Shipping***