metal channel: 21 inches
stamp: 2040 (see Bottom Fitting)
windows origin: Don't know
I need 2 windows sash balances as for now.
Extended-Travel Channel Balance Quote

Quick Learner
Aug 11, 2021 6:20 pm
3 user uploaded images
4 Replies

Tom from SWISCO
Aug 16, 2021 2:48 pm


Thanks for your photos. Based on what I see here, you have either our S380-21 or S385-21, depending on the depth of the bottom shoe. That's the only difference between them. I recommend measuring your shoe and referring to our dimensions to confirm the best match.

Comparison of the S378, S380 and S385 balance shoes.

Quick Learner
Aug 16, 2021 3:16 pm

Tom from SWISCO
Aug 17, 2021 1:01 pm


Yep, if the shoe is 1-3/32" then you want the Series 385.
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