As long the joists in your attic are typical of most homes (16″ or 24″on-center) there is no framing required. You simply cut a hole in the ceiling (or vertical wall), install the mounting brackets, damper box and ceiling diffuser with a few screws. Then connect the ductwork and support the fan assembly to the rafters in the attic. Finally, plug the whole house fan into a standard electrical outlet and it’s installed! Installation is typically completed in about 90 minutes if theirs an electrical outlet near by.
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