small part missing

A home owner from USA says:
I can only see part of the number etched: 610.108. The part I need is the rectangular piece that screws to the window ( three screws, visible in the pic), not the shoe. Thank you!
Thumbnail of the uploaded file named windw part.jpg
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Casey from SWISCO responded:

Hello! Please start by comparing your pivot bar to the 26-241. If it differs in any way, let us know how.

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