block and tackle window balance 29DS48I

Hello,

With this combination of attachments, you could have either the S380-30 or S385-30 channel balance. You’ll need to measure as shown below. The Series 380 has a 1" bottom attachment, and the Series 385 has a 1-3/32" attachment.

Your stamp code indicates that you may have a 48-pound window sash. If so, we can help but this will need to be a custom order since our stock balances will only support up to 45 pounds. We would also need to confirm the number of balances that you need, with the minimum being two. Thank you and let us know if you have any other questions or concerns.

Comparison of the S380 and S385 balance shoes.