Top Shash Guide

A quick learner from Redding Ca says:
Hello Dear Swisco Team of Experts.
Thank you for helping me find the right channel guides recently shipped to me, they fitted perfectly, soon I will order some more but first I need to find the right top shash guides for my Alenco windows.
Once I find the right part, I'll proceed to place the next order.
Please see the attached photos and drawing measurements of the part I need

Thank you in advance for your attention to this request.
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Bob from SWISCO responded:

Hello there. Alenco windows often use the 18-174. This looks slightly different from your old Top Sash Guide, but if the dimensions match overall I think this could work for you. Review the diagrams below, compare to your old guide, and let me know what you think.

Side view of 18-174
Side view of 18-174
Detail of 18-174
Detail of 18-174

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