Hi there, newbee here, I'm glad I found this site coz I need an opinion on Range hood ductings. I recently bought a new Range hood and it requires a 7 inch duct size, my old range hood uses a 4 inch duct size, in short, 4 inches duct size is already built inside the walls and ceiling of my house. And to change it to 7 inch duct requires detaching a part of the ceiling and of course I'm trying to find solutions to avoid that. My question is, would it be alright if i just let the new range hood uses the 4 inch duct size which is already built inside the walls or I really need to change it to 7 inch? thanks a lot!!
