My question is more on installation since I have never done ductwork other than registers before. How do you go about making your own trunk lines? How are the outputs to the rooms or inputs from the returns cut and connected into the trunk? How are two trunk lengths connected together? My ducts now appear to be crimped, how do I go about removing those? Etc...
I found this website that sells oval pipe but is that for trunk or only branch? I don't understand their dimensioning either so I don't know the sq"...
Browsing OVAL
Any tips/links for installation would be awesome, thanks.