As an Amazon Associate, we earn from qualifying purchases. A.O. Smith . 100263664 A.O. Smith . 100263664 Gallery Attributes Brand name, Manufacturer name, ManufacturerA.O. Smith Attribute00ANSI Z21.10.1 Attribute01Residential Attribute0238000 Attribute03CSA 4.1 Attribute0450 gal Attribute05ProMax® Attribute0622 in Attribute07Bottom Attribute08Brass Attribute09, Attribute14, Attribute33No Attribute10Ultra Low Nox Attribute11, Attribute12, Attribute13NPT Attribute1576 Attribute16, Attribute17, Attribute183/4 in Attribute1941 gph Attribute20Natural Gas Attribute2173-1/2 in Attribute22150 Attribute23Vertical Mount Attribute24Blue Diamond® Glass Attribute2538 Attribute26Magnesium, Stainless Steel Attribute27Polyurethane Foam Attribute28300 psi Attribute29155 Attribute30Gas Attribute311/2 in Attribute32Up to 155 Deg F Attribute340.65 Attribute35Direct Vent Attribute36Top Attribute3741 - 50 gal Attribute38Tall AttributeKey00ANSI Specifications AttributeKey01Application AttributeKey02BTU AttributeKey03CSA Certified AttributeKey04Capacity AttributeKey05Collection AttributeKey06, length_Attrib, width_AttribDiameter AttributeKey07Drain Location AttributeKey08Drain Valve Material AttributeKey09ETL Listed AttributeKey10Emission AttributeKey11End Connection 1 AttributeKey12End Connection 2 AttributeKey13End Connections AttributeKey14Energy Star Compliant AttributeKey15First Hour Rating AttributeKey16Fitting Size 1 AttributeKey17Fitting Size 2 AttributeKey18Fitting Sizes AttributeKey19Flow Rate AttributeKey20Fuel Type AttributeKey21, height_AttribHeight AttributeKey22High Pressure AttributeKey23Installation Type AttributeKey24Lining of Tank AttributeKey25MBH AttributeKey26Material AttributeKey27Material Type AttributeKey28Maximum Pressure AttributeKey29Maximum Temperature AttributeKey30Power Source AttributeKey31Supply Pipe Connection AttributeKey32Temperature Range AttributeKey33UL Listed AttributeKey34Uniform Energy Factor UEF AttributeKey35Vent Type AttributeKey36Water Connections AttributeKey37Water Heater Capacity Range AttributeKey38Water Heater Type DimensionUnitinch diameter, length, width22.0 height73.5 moq, multiple, tierMinQty11 MPN100263664 qtyInStockItem Typically in Stock SKU4643556 tierPrice11503.00 Distributor offers SellerSKUMOQIn stockMultiplePrices ferguson.com46435561Item Typically in Stock11 @ $1503.00