Bottom window seal on double hung Soft-Lite DH7 window.

Hello, thanks for writing in. I'm afraid I can't determine what you might need based on your description. In order to make a recommendation I would need to see a picture of your door bottom. I would in particular need to see a clear end profile view. However, to start, take a look at our selection of door bottoms here. 

My apologies for the oversight. It looks like you will need some pile weather stripping. In order to identify the correct replacement piece, you will need to determine the width of the base and the height of the pile. You can view our selection here.