Ok, I see how my question was not clear. Sorry about that! I am looking for the channel that the window slides in (the fuzzy part)
The weep holes can probably be cut into whatever channel works. Also, the screens glide on top of a U shaped piece of plastic (second pic above) I'm attaching clearer pics of the area and channel of the window. (You can see this channel part is disintegrated) I bought some fuzzy channel (pictured) but it seems too bulky.