If this hole goes all the way from the inside to the outside
something is wrong.

If this hole is on a flange on the outside, it is probably a weep
hole and is very important to the function of the window. DO NOT
block the hole if it is a weep hole, it is there to allow water
out of the frame. Weather strip and window seal should occur in
such a way that a weep hole does not allow exterior air to the
inside.

--
~~~~~~~~~~~~~~~~~~~~
DanG
A live Singing Valentine quartet,
a sophisticated and elegant way to say I LOVE YOU!
(local)
http://www.singingvalentines.com/ (national)


"Jo" wrote in message
...
The temperature in our family room has always been a little
different than the rest of the house. We attributed to the wall
of windows that made it unique. Recently, I heard a howl
outside
and felt a breeze blow through the room! So we started looking
and
found at the bottom center of every horizontal sliding window
frame,
there is an oval shaped hole that goes straight to the outside.
You
can really only see it inside if you look down the axis of
travel of the
window. What is this hole, why is it there, and what should I
use to fill
it? Anything else I should be aware of? My first thought was
to just use
the GE Silicon.

Thanks