As an Amazon Associate, we earn from qualifying purchases. A.O. Smith . 100121415 A.O. Smith . 100121415 Gallery Attributes Brand name, Manufacturer name, ManufacturerA.O. Smith Attribute0057.7 Attribute01ASME HLW Attribute02, Attribute12, Attribute13, Attribute15No Attribute03For Sale in CA Attribute04, Attribute21, Attribute28Yes Attribute0550 gal Attribute06Gold Series Attribute07Grey Attribute0821-3/4 in Attribute09, Attribute10, Attribute11NPT Attribute1455-3/4 in Attribute16Electronic Ignition Attribute1730.717 Attribute18Aluminum, Glass, Steel Attribute19150 psi Attribute20181 Attribute22NSF 5 Attribute233 Attribute24Single Phase Attribute25Electric Attribute261-1/4 in Attribute27120 to 181 Deg F Attribute29, Voltage208V Attribute3041 - 50 gal Attribute319 AttributeKey00AMP AttributeKey01ASME Specifications AttributeKey02CARB OTC LEED Compliant AttributeKey03CEC Compliant AttributeKey04CSA Certified AttributeKey05Capacity AttributeKey06Collection AttributeKey07Color Finish AttributeKey08, length_Attrib, width_AttribDiameter AttributeKey09End Connection 1 AttributeKey10End Connection 2 AttributeKey11End Connections AttributeKey12Energy Star Compliant AttributeKey13GSA Approved AttributeKey14, height_AttribHeight AttributeKey15IAPMO Listed AttributeKey16Ignition System AttributeKey17MBH AttributeKey18Material AttributeKey19Maximum Pressure AttributeKey20Maximum Temperature AttributeKey21NSF Certified AttributeKey22NSF Specifications AttributeKey23Number Of Elements AttributeKey24Phase AttributeKey25Power Source AttributeKey26Supply Pipe Connection AttributeKey27Temperature Range AttributeKey28UL Listed AttributeKey29Volts AttributeKey30Water Heater Capacity Range AttributeKey31Watts DimensionUnitinch diameter, length, width21.75 height55.75 moq, multiple1 MPN100121415 qtyInStockCall for Availability SKU3102656 Distributor offers SellerSKUMOQIn stockMultiplePrices ferguson.com31026561Call for Availability1