Jim-

I redid all the flaps. Of the three set of rotating flaps, I'll call
them bottom, center, and top. The center ones are the only ones you
can't take completely out. What I did was pop off the plastic black
strips, cut foam and pop the plastic pieces back. I found after
looking at a number of foams that replacement foam for a home AC
window unit word the best.  for the two larger flaps that deep inside
I just sued some self sticking felt.

JFF

On Mar 5, 2008, at 10:31 PM, Jim Felder wrote:

All of the heater plenum rebuild information I've run across talks
about the
bottom flaps that run heat out into the cabin when the AC is on.
Then there's a hinged pair that obviously close on some kind backflow.

Above that is another shaft with another set of flaps.

These look harder to get to. Do they need refurb, and, if so, how do
you do
it?

Jim