Reliance Short Gas Water Heater, Inlet Connection Size: 3/4 in, Outlet Connection Size: 3/4 in, BTU Rating: 32000 Btu, Gas Type: Propane, 68 gph, Tank Capacity: 30 gal, Energy Efficiency: 0.58 %, Recovery Rate: 36 gph, Vent Type: Standard, Vent Size: 3, 4 in, Water Connection Location: Top, Tank Height: 50 in, Emissions: Low NOx, Dimensions: 18 in Dia x 46-1/4 in H x 18 in W x 18 in D