There are no numbers on this part or on the windows. The windows are double hung vinyl. Please have your experts review this piece and see if they can help me locate it.
Thank you
Paul from SWISCO responded:
August 21, 2017
Hello, thank you for coming to SWISCO.com. You might be able to use our 26-313 if you are only using one screw. Please compare your measurements to ours and see what you think. .