Window weather strip

Hi - My window bottom has a thin slot that runs from one end to other end (left to right or vice versa) into which this strip shown in photo slides into. Do you have this for sale? Could you please help me with the name of this weather strip. Where can i buy this? I need for all the windows in my house.

Excellent, The one i have - matches your description. you guys are great... you ended my year long search for this., thanks,