Window balance

A home owner from San Francisco,ca says:
I need 4 replacements if you can send me the link or let me extant what to order I'll place it asap .

Theirs is also a marking / stamp that says 'a3210' which I also included n the pics .
Thumbnail of the uploaded file named channel balance
Thumbnail of the uploaded file named wingless bottom shoe
Thumbnail of the uploaded file named wingless top fitting
Thumbnail of the uploaded file named wingless balance assembly
Thumbnail of the uploaded file named A3210 stamp
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Emily from SWISCO responded:

Thanks for reaching out to us. This looks like it could be our S351-33 or S390-33 channel balance. You'll have to measure the bottom fitting as shown below to determine the best match. I also recommend you select the 3210 stamp option for your replacements.

Comparison of the S351 and S390 balance shoes.
Comparison of the S351 and S390 balance shoes.

Let me know if you have any questions!

A home owner from San Francisco,ca says:
Thank you for all the help / assistance Emily ! I just placed the order .
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Emily from SWISCO responded:

I'm happy I could help! And thank you for your order, we really appreciate it. I will be here if you need anything else! 

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