Sash balance

Thanks for posting. This appears to be either our Series 380 or our Series 385 Channel Balance, however, I am not familiar with the stamp. To start, can you please confirm the length of the metal channel of your balance?

Also please confirm the measurement for the depth of your bottom shoe, they are typically 1" or 1-3/32". Use the diagram below for reference.

Comparison of the S378, S380 and S385 balance shoes.