What are the downsides of using plasterboard for a (short) HVAC duct

hvac

I need to run a 2 foot extension from a metal HVAC duct. The extension will go through a wall. What are the downsides of framing this extension with plasterboard rather than sheet metal?

Best Answer

It would be easier to put a piece of ductwork in than the drywall. You can always use flexible duct work.