Plastice white top Window Sash Guide

A quick learner from Bradenton, Fl says:
I am hoping you can help me identify this top sash guide. We don't know the window brand. Please see attached photos.
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Paul from SWISCO responded:

Your top sash guide looks similar to our PGT 4000 Series Top Sash Guide, the 18-015. Are you just using the top hole to install on sash? If so, this should work nicely for you. 

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