finding the correct window balance

A distributor from Winthrop WA says:
June 19, 2023
Hello,

I have a window balance that I am trying to find the correct replacement part for based off the stamped numbers on the old, broken window balance. I have a 20-4 BSI oa. The length is at about 20 5/8. Wondering if it would possible be the 21 inch balance and not the 20 inch.

Thanks
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Casey from SWISCO responded:
June 21, 2023

Hello,

We can supply your replacement balances but it will need to be a custom order due to the length, extended travel pulley system and unique combination of end attachments. The 20-5/8" length would be correct for this type of balance assembly. To determine the correct replacement, we will need to see the fitting attached to the opposite end of the metal channel, as well as the clip at the end of the pulley cord. We'll also need to confirm the number of balances that you need, with the minimum being two. Thank you!
A distributor from Winthrop WA says:
June 21, 2023
Hello

Thank you for the response. Below I have provided more pictures that will hopefully help. The number on the balance is 20-4 or 2040. If you could possible work a quote up with the custom balances and send it to the email above that would be awesome.

Thank you so much!
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Casey from SWISCO responded:
June 21, 2023

Thanks for getting back to us. Now, we'll just need you to confirm the number of balances that you need, with the minimum being two. 
A distributor from Winthrop WA says:
June 21, 2023
QT:2 please
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Casey from SWISCO responded:
June 22, 2023

Great, we just sent over an order link and price quote for the balances you requested. Take a look and let us know if you need anything else.
20" Series 385 Channel Balance
20" Series 385 Channel Balance
S385-20
$9.38
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