Replace Counter Balances

A quick learner from Georgia says:
I recently moved in to a home and found the front window would not stay open. After inspecting, I found that the counter balances were broken and not attached to the sash.

Attached are some pictures of the counter balances that were installed.

I've tried finding and purchasing other counter balances that match the length, but the installation method is different than the previous ones.

Is there somewhere I can find counter balances like the ones that were previously installed?
A quick learner from Georgia says:
Here are the pictures of the counter balances.
Thumbnail of the uploaded file named IMG_3018.JPG
Thumbnail of the uploaded file named IMG_3017.JPG
Thumbnail of the uploaded file named IMG_2988.JPG
Thumbnail of the uploaded file named IMG_2990.JPG
Profile picture of Emily
Emily from SWISCO responded:

Hello!

It's hard to say since your balance is damaged but your bottom attachment reminds me of the one that comes with the Series 775 . If there is no stamp on your metal channel, you'll need to weigh the window sash and choose a spring strength option under the product description on our website. Look this over to see what you think and let me know if you have any questions.

A quick learner from Georgia says:
Thanks for the response!

The only marking on the older hardware is 29B, which I see that listed in the options for that part.

I'll measure the shoe on one of the other windows in order to get that information.

Thank you for the help!
Profile picture of Emily
Emily from SWISCO responded:

You're very welcome! If your balance is stamped "29B", then you'll need to select that stamp option on the S775-29 's store page. 

How to install a S775 balance
How to install a S775 balance
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