Need to know what part to order for our balance string

A home owner from New Jersey says:
June 27, 2023

We have a broken balance string on one of our Anderson windows.

We think it says BG56 6/73 436. (See two attached photos).

Please tell us what part we need to order.

Thanks

Cynthia 

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Emily from SWISCO responded:
June 28, 2023

Thanks for reaching out to us, Cynthia. I believe I might see the numbers 6 23 stamped on your balance. I just can't be sure since they're pretty worn and faded. With that said, take a look at the 24-637. This is designed to replace balances that include the 6 23 stamp. 
Andersen Sash Balance, 623, 627, 631, 637
Andersen Sash Balance, 623, 627, 631, 637
24-637
$54.20
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