Window block and tackle from a single hung vinyl windows

A handy person from Byron center Michigan says:
I have ordered The S850-32 and it is to large. Do you have a lighter duty version of the same type of block and tackle balance? I have attached a picture the S850 is the top one I need the one on the bottom.
User submitted image of their window hardware.
Profile picture of Tom
Tom from SWISCO responded:
Yes, we can make you a special, skinnier Series 850 balance. However, it will need to be a custom order. Before we begin, can you just tell me how many you need? Also, what is the width of the red shoe?
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