replacement sash balance boxes

A contractor from Union NJ says:
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:
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.
How to replace an Andersen Window Balance
How to replace an Andersen Window Balance
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 4-7 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