window part

A quick learner from USA says:
May 28, 2021
Please advise what this part is, it's off my sash single hung non-tilt window. Reference picture, this is the top part of the window sash that goes into the window frame and allows the spiral balance to stay in place.
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Bob from SWISCO responded:
June 2, 2021

This looks like the kind of Top Sash Guide used with non-tilt spiral balances. See if either our 18-063 or 18-001 match what you need.
A quick learner from USA says:
June 2, 2021
Bob, thank you much! 18-001 is the one. Thanks again.
Top Sash Guide
Top Sash Guide
18-001
$0.81
5/8" Top Sash Guide
5/8" Top Sash Guide
18-063
$0.81
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