Vinyl replacement windows, installed by Home Depot, may have been Corning or Certainteed brand. None of the pictures on your website were a close enough match to this part.
Other parts I've ordered from you that work with these windows are:
58-183 : .187 T-Slot Offset Hollow Foam Seal,12ft
26-243 Tilt Window Latch, Left Hand
26-244 Tilt Window Latch, Right Hand