Old Williamson Furnace Model Numbers

Billy, what is the age of a williamson furnace s./n 7343599? thanks, greg I have an old williamson furnace: model no.: 1167-12-5 d58 serial no Furnace williamson pm

I have an old Williamson furnace: Model No.: 1167-12-5 D58 Serial No

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Billy, What is the age of a Williamson furnace S./N 7343599? Thanks, Greg

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