On 1 Jun 2005 04:52:56 -0700, someone wrote:

If you know you are going to replacing the whole unit, cut one very
large hole, much larger than the fan, in fact all the way over to the
wall if it is nearby (as this will facilitate finishing the new
drywall). Then you will have plenty of room to tear out the old one,
and to hang the new one, and make all the ducting and electrical
connections.

Look at it this way - for any hole you cut up to 4 feet by 8 feet, you
still only have to buy ONE sheet of gypsum board.


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