BSI 2320w

Thanks for posting! Your balances look a like our S380-24 with a 1" shoe or our S385-24 with a 1-3/32" shoe. The metal channel of these balances is 24".

To determine which series is needed for your window, look over the dimensions from the diagram below to confirm the depth of your bottom shoe. Although, there is a chance that it could measure 7/8". If so, please let me know as these will need to be a custom assembly.

You'll need to select the 2320 stamp option.

Comparison of the S380 and S385 balance shoes.