11600-17 Andersen Sash Balance

Question

I have Anderson Windows that are about 25 years old also and need to replace the sash balancers. The only part number that I see stamped on the originals is 11600-17. There is also a number on the staple flange, 623 and BH36 4 91, Should I be replacing with 24-637 or another?
Thanks for your help.
Bob

Paul · Accepted Answer

Yes! The key stamp here is "623," which corresponds to our 24-637.