I reordered and received part #
39-448 recently.
The part (left below) is different than the part (right below) yet it has the same part number that I received in 2020. (see order history below).
The 4 columns in the new part are longer than the previous part and wont allow the window to close.
The part I received in 2020 is 9/32" deep and all the other dimensions are the same as those in your diagram
This is a mystery because the part on the right side in my photo is the part
39-448 I ordered in 2020. I know this for sure because this same part broke again.
