Lochinvar® Glass Lined Indirect Water Heater, GIT Series, 42 gal Capacity, 105000 Btu/hr, 14 gpm Flow Rate, 196 gph First Hour Delivery, 1.8 deg F/hr Standby Loss, MNPT x FNPT Connection, 150 psig, Continuous Draw: 157 gph, 39 gal First Draw, 1.9 ft Heat Source Friction Loss, 5.7 ft Pressure Drop, Steel, Lead-Free, 194 deg F, 55-3/4 in H x 20 in W, Domestic/Import: Domestic