Anderson window balancer

A quick learner from Windham, Maine 04062 says:
We have several Anderson windows that have broken strings on the balancers. Last time I purchased these the vendor needed the numbers on the window glass and a dimension on the windows. The top measures 36" X 27" and the bottom measures 36" X 39.5". The numbers on the glass are HP-C6-84S and GCC-CBA 324.
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Paul from SWISCO responded:

Thanks for reaching out to us. I believe the sash sizes you are giving are the complete sash size, not the visible glass sizes. If so, you have a 3056 window where the visible glass size is 32-1/2" X 36" for the bottom sash. The window balances will be 24-L9-1327 on one side and 24-R13-927 on the other side. I recommend you make sure your old balance is stamped with the number L9 1327 just to be safe. 

A quick learner from Windham, Maine 04062 says:
Thank you Paul; you are right about the glass size. My second floor window glass is 32.5" wide with a height of 28.5"; both top and bottom panes are the same. Please quote a price for the balancers of those windows and I'll order some for both size windows to get them installed while the temperatures are still warn.
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Paul from SWISCO responded:

You can place an order for these balances directly on our website or by calling (888) 991-1929!

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