As an Amazon Associate, we earn from qualifying purchases. A.O. Smith . 100304555 A.O. Smith . 100304555 Gallery Attributes Brand name, Manufacturer name, ManufacturerA.O. Smith Attribute0040000 Attribute01, Attribute13, Attribute16, Attribute21, Attribute25No Attribute02For Sale in CA Attribute03CSA 4.1 Attribute0440 gal Attribute05ProMax® Attribute06Grey Attribute0722 in Attribute08, Attribute09NPT Attribute10Yes Attribute1145.5 Attribute12Natural Gas Attribute14Energy Star, Yes Attribute1558-1/4 in Attribute17Hot Surface Ignition Attribute18400 Attribute19Glass, Steel Attribute20150 psi Attribute22Gas Attribute233/4 in Attribute24AGPDL4000L010S41 Attribute26Direct Vent Attribute2730 - 40 gal Attribute28Short AttributeKey00BTU AttributeKey01CARB OTC LEED Compliant AttributeKey02CEC Compliant AttributeKey03CSA Certified AttributeKey04Capacity AttributeKey05Collection AttributeKey06Color Finish AttributeKey07, length_Attrib, width_AttribDiameter AttributeKey08End Connection 1 AttributeKey09End Connections AttributeKey10Energy Star Compliant AttributeKey11First Hour Rating AttributeKey12Fuel Type AttributeKey13GSA Approved AttributeKey14Green AttributeKey15, height_AttribHeight AttributeKey16IAPMO Listed AttributeKey17Ignition System AttributeKey18MBH AttributeKey19Material AttributeKey20Maximum Pressure AttributeKey21NSF Certified AttributeKey22Power Source AttributeKey23Supply Pipe Connection AttributeKey24Type AttributeKey25UL Listed AttributeKey26Vent Type AttributeKey27Water Heater Capacity Range AttributeKey28Water Heater Type DimensionUnitinch diameter, length, width22.0 height58.25 moq, multiple1 MPN100304555 qtyInStockCall for Availability SKU5065965 Distributor offers SellerSKUMOQIn stockMultiplePrices ferguson.com50659651Call for Availability1