As an Amazon Associate, we earn from qualifying purchases. A.O. Smith . 100297241 A.O. Smith . 100297241 Gallery Attributes Brand name, Manufacturer name, ManufacturerA.O. Smith Attribute0095.00 Attribute01ASME H Attribute02Commercial, Residential Attribute03199000 Attribute04185000 Btu/h Attribute05Proline® XE Attribute06, Attribute17, Attribute21No Attribute0718 in Attribute08Ultra Low Nox Attribute09Yes Attribute104.8 gpm Attribute11Natural Gas Attribute12Energy Star, Yes Attribute1332-1/2 in Attribute14199 MBH Attribute15, Attribute2318-3/4 in Attribute16150 psi Attribute18Gas Attribute191 in Attribute201/2 in Attribute22Direct Vent AttributeKey00AFUE AttributeKey01ASME Specifications AttributeKey02Application AttributeKey03BTU AttributeKey04BTU Heat Rating AttributeKey05Collection AttributeKey06Condensing AttributeKey07Depth AttributeKey08Emission AttributeKey09Energy Star Compliant AttributeKey10Flow Rate AttributeKey11Fuel Type AttributeKey12Green AttributeKey13, height_AttribHeight AttributeKey14Input MBH AttributeKey15, length_AttribLength AttributeKey16Maximum Pressure AttributeKey17NSF Certified AttributeKey18Power Source AttributeKey19Return Pipe Connection AttributeKey20Supply Pipe Connection AttributeKey21UL Listed AttributeKey22Vent Type AttributeKey23, width_AttribWidth DimensionUnitinch height32.5 length, width18.75 moq, multiple1 MPN100297241 qtyInStockCall for Availability SKU7573504 Distributor offers SellerSKUMOQIn stockMultiplePrices ferguson.com75735041Call for Availability1