Commercial Gas Water Heater Commercial Tank Capacity - Plumbing 100.0 gal. Fuel Type - Water Heaters Natural Gas 399 900 BtuH - Water Heaters Overall Height - Water Heaters 76 In. Jacket Dia 30-1/4 In. First Hour Recovery - Water Heaters 458 gph Draft Hood Size 8 In. Recovery @ 90 F Rise 461.0 gph Low Nox Burner Yes Voltage 120VAC Max Pressure 150 psi Temp Range 100 Degrees to 180 Degrees F Vent Type Standard Ignition Type Spark to Pilot Uniform Energy Factor -