certainteed devon window part

A quick learner from bethesda, md says:
March 11, 2021
I need the stop or block or whatever that is.
Thumbnail of the uploaded file named webcam-3/11/2021, 5:52:01 PM.png
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Casey from SWISCO responded:
March 12, 2021

Hello,

This looks like part of a coil balance assembly that supports the weight of the window sash. We'd be happy to research your replacement options but we would need to see the coils and pivot shoe removed from the window to compare to our inventory. Thank you!
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