As an Amazon Associate, we earn from qualifying purchases. A.O. Smith . 100191274 A.O. Smith . 100191274 Gallery Attributes Brand name, Manufacturer name, ManufacturerA.O. Smith Attribute00ANSI Z21.10.1 Attribute01Residential Attribute0250000 Attribute03CSA 4.1 Attribute0450 gal Attribute05Blue Diamond® Glass Coating Attribute06ProLine® Attribute0722 in Attribute08Bottom Attribute09Brass Attribute10, Attribute15, Attribute30No Attribute11Low Nox Attribute12, Attribute13NPT Attribute14NPT x NPT Attribute1689 Attribute17Natural Gas Attribute1860-3/4 in Attribute19150 Attribute20Piezo Igniter Attribute21Vertical Mount Attribute2250 Attribute23Glass, Magnesium, Stainless Steel Attribute24Polymer Attribute25300 psi Attribute26155 Attribute27Gas Attribute283/4 in Attribute29Up to 155 Deg F Attribute310.61 Attribute32Atmospheric Vent Attribute33Top Attribute3441 - 50 gal Attribute35Tall AttributeKey00ANSI Specifications AttributeKey01Application AttributeKey02BTU AttributeKey03CSA Certified AttributeKey04Capacity AttributeKey05Coating AttributeKey06Collection AttributeKey07, length_Attrib, width_AttribDiameter AttributeKey08Drain Location AttributeKey09Drain Valve Material AttributeKey10ETL Listed AttributeKey11Emission AttributeKey12End Connection 1 AttributeKey13End Connection 2 AttributeKey14End Connections AttributeKey15Energy Star Compliant AttributeKey16First Hour Rating AttributeKey17Fuel Type AttributeKey18, height_AttribHeight AttributeKey19High Pressure AttributeKey20Ignition System AttributeKey21Installation Type AttributeKey22MBH AttributeKey23Material AttributeKey24Material Type AttributeKey25Maximum Pressure AttributeKey26Maximum Temperature AttributeKey27Power Source AttributeKey28Supply Pipe Connection AttributeKey29Temperature Range AttributeKey30UL Listed AttributeKey31Uniform Energy Factor UEF AttributeKey32Vent Type AttributeKey33Water Connections AttributeKey34Water Heater Capacity Range AttributeKey35Water Heater Type DimensionUnitinch diameter, length, width22.0 height60.75 moq, multiple1 MPN100191274 qtyInStockCall for Availability SKU5096774 Distributor offers SellerSKUMOQIn stockMultiplePrices ferguson.com50967741Call for Availability1