Help Identifying Series and Part Number

A home owner from Florida says:
February 9, 2023
The part pictured has U B 28B stamped on it. I have a list of windows that I need to replace the balances in and they have the below stamped on them:

22B
28D
16A
28A
22D
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Jasmine from SWISCO responded:
February 10, 2023

Thanks for posting. Assuming all five balances have the same design as your original hardware, it looks like you'll need either our S380 or our S385 channel balance. 

To determine which balance you have, you'll need to confirm the measurement from your bottom shoe. Use the diagram below for reference.

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

Feel free to reach out if you have any questions.
29" Series 380 Channel Balance
29" Series 380 Channel Balance
S380-29
$11.10
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