Window balance sash weight?

Handy Person from Florida
The old balance has 29-9 ca2 cmc4 on it. I need to know which one to go with. Thank you.
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Tom
Tom from SWISCO
SWISCO
Expert

I'm not sure what you have, unfortunately. There are dozens of different balances with that stamp. It's not a product code or anything, it just indicates the strength of the spring.

In order to figure out what Series this is, I need you to remove an undamaged version of this balance from the window and show me clear pictures of the top and bottom nylon fittings. I will also need to know the dimensions of these fittings. Finally, please tell me the exact weight of your sash.

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