the manufacturer of the windows are accent windows - they are no longer in business - these clips hold the window screen in place
Dave Sr. from SWISCO responded:
April 12, 2021
I believe your screen clip was made in house by the manufacturer. For a replacement, check out the 70-212 or 70-176. I actually had to use the 70-176 on a window at my house when the clip was no longer available. If you have any other questions just let us know.