Model#8421

SKU808816

UPC14717084215

Natural Gas Water Heater Control With 4" Water Column, 1/2" National Pipe Thread Gas Inlet By 1/2" Inverted Flare Outlet, 1-1/4" Shank Length, Adjustable From 70 Degrees To 160 Degrees Fahrenheit, Robertshaw 79,000 BTU.