Depends on local codes.
It's done all the time in my area.
2x4 won't flow that much air, maybe 200 cfm per bay.
2x6 is better for this.
Panned off floor joists can flow up to 300 to 500 cfm depending on the thickness of the joists.
Metal ducts are far less leaky but add to cost.
It's done all the time in my area.
2x4 won't flow that much air, maybe 200 cfm per bay.
2x6 is better for this.
Panned off floor joists can flow up to 300 to 500 cfm depending on the thickness of the joists.
Metal ducts are far less leaky but add to cost.