replacement sash balance boxes

A contractor from Union NJ says:
December 3, 2017
I need replacement sash balance boxes for 2 Windows
The following window. Measurements are 36" wide by 37 " tall double hung. They are original to house with the sash being clad on the outside a wood on the inside

Can you please send me the details for witch. Balance is needed
Profile picture of Paul
Paul from SWISCO responded:
December 5, 2017
On the glass, is there an Andersen marking? It usually looks like a triangle. If so, may we have the visible glass width and height of the sash? If the windows are not Andersen, remove one of the boxes and show us a photo of it.
Andersen Sash Balance, 823, 827, 831, 837
Andersen Sash Balance, 823, 827, 831, 837
24-837
$52.70
How to replace an Andersen Window Balance
How to replace an Andersen Window Balance
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