Window Balancer

A quick learner from Florida says:
Hi, I have 3 Florida Extruders widows that need new window balancers.
The number stamped is 28C USB
The metal channel is 29" long
The glass is single pane, do I need to weigh it
Here are some pictures of the ends, let me know what part # I need to order.
Thanks
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Casey from SWISCO responded:

Hello,

With this combination of attachments, you could have either an S380-29 or S385-29 channel balance. You’ll need to measure as shown below. The Series 380 has a 1" bottom attachment, and the Series 385 has a 1-3/32" attachment. You'll also need 2830 spring strength options for your replacement balances.

Thank you and let us know if you have any other questions or concerns.


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