I need two of these and I hope you can help

Question

There are the following written on this piece 1320HG B.S.I. , the other piece is destroyed.  They go on each side of the lower window to allow it to open and close.  There is not any way I can identify what type of window (who manufactured it but am including a picture for you.

Casey · Accepted Answer

Hello,

With this combination of attachments, you could have either the S380-14 or S385-14 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 1320 spring strength options for your replacement balances. Thank you and let us know if you have any other questions or concerns.

Comparison of the S380 and S385 balance shoes.