Counter balance and counter balance holder

With this combination of attachments, you could have either an S380 or S385 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. 

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.

As for your top sash guide, take a look and compare the specifications of the 18-124P guide pair to yours. Thank you and let us know if you have any other questions or concerns.

Comparison of the S380 and S385 balance shoes.