Part for window

A home owner from Windsor Mill MD says:
I just placed an order with Swisco today for your S140-12. Wanted to make sure it was the correct part for the window before it ships. Need part by Friday.
User submitted a photo of window hardware.
Profile picture of Paul
Paul from SWISCO responded:
I'm afraid the only thing your sticker tells me is that your window was made by MI Home Products, Inc. They used many different balance systems through the years, though, and I cannot confirm if the S140-12 is correct. I will need to see pictures of your balance system removed from the window, if possible.
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