PATENT #6598.264
Hello,
We should be able to supply your replacement balances but it will need to be a custom order due to the length, extended travel pulley system and unique combination of end attachments. With that being said, we'll need to see a balance with an intact bottom fitting removed from the other side or an identical window to confirm the correct replacement. Please include a side profile photo of the bottom fitting with the wheel inside of it. There should also be numbers stamped on the metal channel that we'll need to determine the spring strength needed for your new balances. Thank you!
Thanks for getting back to us. We just sent over an order link and price quote for the balances you requested. Take a look and let us know if you need anything else. Thank you!