Replace block and tackle on patriot window

A quick learner from nJ says:
My balance is broken on my patriot single hung window. It looks most like your series 850 block and tackle balance. However, the size measures 35 inches- what size or material do I need to purchase?

- there was a spring loaded inside the metal cage that I did not show, just fyi
User submitted image of their window hardware.
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Tom from SWISCO responded:
We should be able to replace this. This is not our Series 850 crossbow balance, but instead an older version of the Series 795 channel balance. I think you'll agree it's a lot closer in style.

There is one major difference I see right off the bat, though. Your shoe looks to be much smaller than the one that comes with the Series 795 by default, the 15-195. I think you might have the thinner 15-194, which is only 1" wide as opposed to 1-1/4". Can you confirm?

If so, you have two options. We can custom make a Series 795 for you with this shoe. Alternatively, you could purchase a Series 795 balance and 15-194 shoe separately, and then swap them out yourself. They just pop on and off so it's not all that much trouble. It's up to you! Let me know how you wish to proceed.

Another important detail to note is that our Series 795 attaches with a screw tab at the top.
A quick learner from Nj says:
Thanks so much- that definitely looks a lot closer. I will purchase the other shoe- since mine is 1"- great call!!

I am unsure about the weight of the sash and which product- A,B, or C I should order

Thanks for your help!
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Tom from SWISCO responded:
Great, glad to hear everything matches up! Now, for the option, check your old balance to see if there is a stamp printed anywhere. That usually lets you know what option to choose. If not, you will have to weigh your sash.
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