Andersen window balance replacement

A home owner from Forked River, NJ says:
first things first. Your YouTube video was extremely helpful. I have to replace both balances and the numbers visible on the hardware are 11600-17 on the flat bottom under the Andersen logo. On the short side where the balancer was stapled to the wood shows 1291. Please let me know what part number I need to order so I can fix the window.
Thank you very much,
Dave Tierney
A home owner from Forked River, NJ says:
My son, good set of eyes, was also able to read the entire number on the short side. 5191BL451291.

I also found a number on the window - 2032. The window measures 16x20.5.

Profile picture of Paul
Paul from SWISCO responded:
Thanks for posting! I believe the key number here is "519." Is this printed differently, perhaps? If so, I recommend our 24-531, which can replace operators with this number.
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