Stamp help

A contractor from Minneapolis says:
I'm trying to figure out which channel balances these are. There are a few that are really similar.
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Lauren from SWISCO responded:

Hello, thank you for posting,

To further review, we will need to see pictures of the full balance where we can view clear images of the attachments on the metal channel. From there we can compare to confirm the correct series for your window. Thank you! 

A contractor from Minneapolis says:
Here you go
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Lauren from SWISCO responded:

Thank you for the additional pictures,

With this combination of attachments, you could have either an S380 or S385 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. 

The length of the metal channel should measure 32" long and you will need a 3150 stamp option. Please review and let me know if you have any additional questions! 

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

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