Sash balancer ID please

Hello,

With this combination of attachments, you could have either the S380-27 or S385-27 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. 

I believe you'll also need 2630 spring strength options for your replacement balances based on your stamp code, but I'd recommend confirming your sash weighs between 13-19 pounds to be safe. Thank you and let us know if you have any other questions or concerns.

Comparison of the S378, S380 and S385 balance shoes.