Anderson 30-3442-20 angle bay window with 3 Narrowline double hung windows

A handy person from Blue Bell, Pa. says:
February 15, 2018
This 30 degree bay is from 1992. All 6 windows balancers need to be replaced. All 6 balancers are marked 11600-17 on the face. The 4 outer smaller window balancers are marked 627 on the mounting tab, the 2 center larger window balancers are marked 1031, also on the mounting tab. There are other numbers stamped on them but am assuming could be manuf. dates. Also, do they have to be ordered RIGHT & LEFT because the tension and cord distance varies between the upper and lower window sashes. Can you clarify all this for me. THANKS, Jeff
User submitted photos of window hardware.
Profile picture of Paul
Paul from SWISCO responded:
February 15, 2018
Hello Jeff. Let's start off by pointing out how great your windows look. Ok, let's move on to the reason you contacted us. For your outer windows, your stamping of "627" corresponds to our 24-637 sash balance. As for your middle window, our 24-1033 accommodates your "1031" sash balance. These balances don't come in left and right because you have equal heights of the top and bottom sash.
Andersen Sash Balance, 623, 627, 631, 637
Andersen Sash Balance, 623, 627, 631, 637
24-637
$54.20
Andersen Sash Balance, 1027, 1031, 1033
Andersen Sash Balance, 1027, 1031, 1033
24-1033
$54.20
How to replace an Andersen Window Balance
How to replace an Andersen Window Balance
VIDEO
WATCH >
Andersen's Narroline Sash Balances
Andersen's Narroline Sash Balances
GUIDE
READ >
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 3-4 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at (888) 991-1929 or at help@swisco.com.