Bradford White® Defender Safety System® Gas Water Heater, 40000 Btu/hr Heating, Natural Gas Fuel, 1/2 in Gas Connection, 40 gal Tank, Pilot Ignition, Atmospheric Vent, 3 x 4 in Vent, 43 gph Recovery Rate, 0.59 Energy Factor, 3/4 in NPT Water Connection, 150 psi Pressure, Ultra Low Nox: No, 20 in Dia x 24-3/4 in D x 57-7/8 in H Dimensions, Domestic
These models feature an automatic flue damper that helps to reduce stand-by heat loss. The flue damper, combined with additional insulation and heat traps, helps these units achieve one of the highest Energy Factor (EF) ratings of our atmospheric vent models.