As an Amazon Associate, we earn from qualifying purchases. A.O. Smith . 100120178 A.O. Smith . 100120178 Gallery Attributes Brand name, Manufacturer name, ManufacturerA.O. Smith Attribute005 Attribute01ANSI Z21.10.3 Attribute02180000 Attribute03, Attribute12, Attribute14, Attribute16, Attribute28No Attribute04For Sale in CA Attribute05CSA 4.3 Attribute0693 gal Attribute07Enamel Attribute08Master-Fit® Attribute09Grey Attribute1027-3/4 in Attribute11Ultra Low Nox Attribute13Natural Gas Attribute1578-1/4 in Attribute17Intermittent Electronic Ignition Attribute18Back Mount, Front Mount, Top Mount Attribute19180 Attribute20Glass, Steel Attribute21160 psi Attribute22100 Attribute23Yes Attribute24NSF 5 Attribute25Gas Attribute261-1/2 in Attribute271400 to 1600 Deg F Attribute29Atmospheric Vent Attribute30, Voltage120/60V Attribute3151 - 100 gal AttributeKey00AMP AttributeKey01ANSI Specifications AttributeKey02BTU AttributeKey03CARB OTC LEED Compliant AttributeKey04CEC Compliant AttributeKey05CSA Certified AttributeKey06Capacity AttributeKey07Coating AttributeKey08Collection AttributeKey09Color Finish AttributeKey10, length_Attrib, width_AttribDiameter AttributeKey11Emission AttributeKey12Energy Star Compliant AttributeKey13Fuel Type AttributeKey14GSA Approved AttributeKey15, height_AttribHeight AttributeKey16IAPMO Listed AttributeKey17Ignition System AttributeKey18Installation Type AttributeKey19MBH AttributeKey20Material AttributeKey21Maximum Pressure AttributeKey22Maximum Temperature AttributeKey23NSF Certified AttributeKey24NSF Specifications AttributeKey25Power Source AttributeKey26Supply Pipe Connection AttributeKey27Temperature Range AttributeKey28UL Listed AttributeKey29Vent Type AttributeKey30Volts AttributeKey31Water Heater Capacity Range DimensionUnitinch diameter, length, width27.75 height78.25 moq, multiple, tierMinQty11 MPN100120178 qtyInStockCall for Availability SKU4488986 tierPrice110130.57 Distributor offers SellerSKUMOQIn stockMultiplePrices ferguson.com44889861Call for Availability11 @ $10130.57