replacement parts

Hello, thank you for posting,

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. 

The stamp on the balance does not directly translate to spring strength options. To move forward, are you able to provide the weight of the window sash? The sash will need to be removed and placed on a scale. 

For the top sash guide, please start by reviewing the style and dimensions of the 18-180 to see how it compares to your original. 

Comparison of the S380 and S385 balance shoes.