Milgard Window part

A landlord from San Anselmo, CA says:
Hello! I have looked through all of your window parts and couldn't find this one. I am sending a photo of the broken one and the other functioning one. Can you help us id it? Thanks!
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Tom from SWISCO responded:

This old Milgard top sash guide isn't made anymore, unfortunately. The good news is that you can use our 18-009 as an alternative. The only catch is that you have to trim the top edge so that the guide can fit in the space available. For now, I just recommend reviewing our dimensions to ensure that everything else matches.

Detail of 18-009
Detail of 18-009

Side view of 18-009
Side view of 18-009

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