[Yoyizit]

for construction and installation of resi. duct work?

 

[texas115115]

Yes there is.

It can vary from place to place not much though. Call your local inspector to find out what your city wants.:thumbup:

 

[beenthere]

Yes there is.

As above. Different areas enforce the code differently, or not at all.

 

[kenmac]

here you can't install duct board / flex in a garage area.. Must be metal