Prevents single hung window from sliding down when open

A handy person from Los Angeles says:
The small piece shown prevents a single hung window from sliding down when open. These metal pieces are breaking on what may be Milgard windows. The uploaded pictures show a window bottom with an unbroken piece in place that works. The broken piece is shown half still attached and the part that broke off. Can't find anything to identify the window brand but looks very similar to Milgard. Window system failing for want of a single tiny part.
A handy person from Los Angeles says:
Here is a photo of the part needed.
Thumbnail of the uploaded file named Window Part.jpg
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Casey from SWISCO responded:

Thanks for the inquiry! Want to take a look at the 26-241. I think this is a good match, but you'll need to confirm the dimensions to be certain. Let me know if they differ at all.

Profile picture of Casey
Casey from SWISCO responded:

We are happy to hear that this will work for you. Be sure and get back to us and let us know how everything works out. 

A handy person from Los Angeles says:
Yes, that is the correct item which I found yesterday on your site. My daughter is ordering a dozen. Great service and parts selections. Thank you.
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