As an Amazon Associate, we earn from qualifying purchases. A.O. Smith . 100131998 A.O. Smith . 100131998 Gallery Attributes Brand name, Manufacturer name, ManufacturerA.O. Smith Attribute00ANSI Z2223.1 Attribute01, Attribute25Yes Attribute02Commercial Attribute03, Attribute15No Attribute04CSA 4.3 Attribute0530 gal Attribute06Enamel Attribute07Dura-Power™ Attribute08Grey Attribute09Greys Attribute1021-3/4 in Attribute11, Attribute12FNPT Attribute13FNPT x FNPT Attribute1430-7/8 in Attribute16Electronic Ignition Attribute17Glass Attribute18Glass, Steel Attribute19181 Attribute202 Attribute21Three Phase Attribute22Electric Attribute233/4 in Attribute24120 to 181 Deg F Attribute26, Voltage208V Attribute27Top Attribute2830 - 40 gal Attribute29Lowboy Attribute306 Attribute31, Weight100 AttributeKey00ANSI Specifications AttributeKey01ASME Specifications AttributeKey02Application AttributeKey03CARB OTC LEED Compliant AttributeKey04CSA Certified AttributeKey05Capacity AttributeKey06Coating AttributeKey07Collection AttributeKey08Color Finish AttributeKey09Color Finish Category AttributeKey10, length_Attrib, width_AttribDiameter AttributeKey11End Connection 1 AttributeKey12End Connection 2 AttributeKey13End Connections AttributeKey14, height_AttribHeight AttributeKey15IAPMO Listed AttributeKey16Ignition System AttributeKey17Lining of Tank AttributeKey18Material AttributeKey19Maximum Temperature AttributeKey20Number Of Elements AttributeKey21Phase AttributeKey22Power Source AttributeKey23Supply Pipe Connection AttributeKey24Temperature Range AttributeKey25UL Listed AttributeKey26Volts AttributeKey27Water Connections AttributeKey28Water Heater Capacity Range AttributeKey29Water Heater Type AttributeKey30Watts AttributeKey31, Weight_AttribWeight DimensionUnitinch diameter, length, width21.75 height30.875 moq, multiple1 MPN100131998 qtyInStockCall for Availability SKU1120182 Distributor offers SellerSKUMOQIn stockMultiplePrices ferguson.com11201821Call for Availability1