Need help identifying balancer

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Handy Person from Tempe

Mar 15, 2026 4:16 pm

The only marking I can find is attached in the photo

4 Replies

Bob from SWISCO

Mar 16, 2026 3:21 am

Hello there. Can you confirm the length of the metal channel? Can you also confirm there is indeed no stamp on the metal channel? We'll do our best to help from there.

Handy Person from Tempe

Mar 16, 2026 11:48 am

Here's a photo of the stamp. I believe this means it's 27 in

1 user uploaded image

Bob from SWISCO

Mar 18, 2026 4:21 pm

Perfect, thanks. Those first two digits '27' actually refer to the height of visible glass in the window. The channel balance is usually 1" longer than that. Therefore this looks like either an S380-28, S385-28, or S378-28. The only difference between these three balances is the 'depth' of the bottom shoe. See below. Measure your old balance's shoe depth to see what matches best. For a stamp option choose 2730.

Comparison of the S378, S380 and S385 balance shoes.