Window Balance

A quick learner from Fremont, CA says:
Hi
Could you please identify the the parts that we should order for replacement?
I attached the pictures also the stamped # are 12-2 BSI, 12-3 BSI, and 15-2 BSI.

Thanks,

Dzung
Thumbnail of the uploaded file named Balance Top Guide
Thumbnail of the uploaded file named Channel balance Shoe
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Jasmine from SWISCO responded:

Hi Dzung,

Thanks for posting! Your channel balances appear to be either the Series 380 with a 1" shoe depth or the Series 385 with a 1-3/32" shoe depth. To confirm which series you have, carefully compare the dimensions shown on the diagram below. There is a chance the shoes could measure 7/8", if so, please let me know as your balances would need to be a custom assembly.

Once you've confirmed the series, you'll need to select the stamp for your respective balances. For the two 13" balances, you'll need the 1220 and 1230 stamp options; the 16" balances will need the 1520 stamp option.

Comparison of the S380 and S385 balance shoes.
Comparison of the S380 and S385 balance shoes.

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