10 inch 5/8 channel window balancers
Hello,
I agree that with this combination of attachments, you could have either the S380-10 or S385-10 channel balance. You’ll need to measure as shown below to choose the correct match. The Series 380 has a 1" bottom attachment, and the Series 385 has a 1-3/32" attachment.
You'll also need to weigh your sash to determine which option you'll need. There is a chart on the product page that explains how to choose your option based on the sash weight. Thank you and let us know if you have any other questions or concerns.
Thank you for your patience as we looked into this for you. We can supply the replacement balances that you need but it will need to be a special order since your sash is heavier than any of the stock S385-10 strength options can support. We just sent over an order link and price quote for you to review. Take a look and let us know if you need anything else. Thank you!