Ed Pawlowski wrote:
On Wed, 19 Sep 2012 20:37:19 -0400, Jan Philips
wrote:

We are having our kitchen remodeled. We are reusing our microwave oven
(a Kenmore 665.6170911). The contractor says that there is supposed
to be a piece on top of it that lets air out the vent but closes to
keep anything from coming in. I looked in the manual and don't see
anything like that, even in the installation instructions. Is there
such a thing, and if so, how can I find out the part number for one
for this microwave oven?

In my limited experience of installing three such microwaves, none had
an included damper. It had a duct outlet, but the damper was provided
by the installer or customer.

They are readily available at home stores and come in a variety of
sizes.

My sears unit did come with it. Mine is the over range type. It was
approximately valued at $450-$500, but I got it at a discount house for
about $200.

Greg