It appears to say 3040 BSI 1H
This is for a non tilting window
Window balance
Home Owner from Florida
Mar 21, 2025 2:46 pm
5 user uploaded images
2 Replies
Emily from SWISCO
Mar 24, 2025 11:12 am
Hey there!
Thanks for reaching out to us. Take a look at the S380-31 and S385-31 channel balances. The best match will depend on the depth of the bottom fitting so you'll have to measure as shown below. You can also select the 3040 stamp option for your replacements.
Please let us know if you have any questions.
Comparison of the S378, S380 and S385 balance shoes.
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