Im asking again as I watch a contractor install a gas fired pizza oven commercial grade. Is it necessary for the chimney to be a "grease" duct chimney if theres no grease coming from pizza you surely don't fry the pizza its baked. Or is the contractor just doing this for more expense and profit in his pocket? Im asking because the folks who are having this oven installed are friends and they are not here to see the process of the building thats taking place
Thanks
Bill
Thanks
Bill
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