Anderson sash balance

A home owner from Ringwood, NJ says:
Looks like D53 7427 1085
Same number on both right and left side of window
Bottom window glass measures W 28 3/8 X H 21 7/8
Wooden frame
About 15 years old
Thumbnail of the uploaded file named 11A093E9-D6D4-468B-A381-1D8BB563D69F.jpeg
Profile picture of Emily
Emily from SWISCO responded:

Hi there!

It looks like your balance might have "7#27" printed on it. If that's the case, see our 24-737 Andersen sash balance. This is meant to replace old Andersen Sash Balances that have the stamp code 7#27.

A home owner from Ringwood, NJ says:
Thank you. I know existing hardware shows 727 but just thought due to window size it should be 837. Is there much of a difference between the two?
Profile picture of Paul
Paul from SWISCO responded:

The 24-737 is for a sash weighing about 14 lbs and the 24-837 is for a 16 lb sash.

24-737 : Andersen Sash Balance, 725, 727, 731, 737
Andersen Sash Balance, 725, 727, 731, 737
24-737
$47.95
VIEW >
24-837 : Andersen Sash Balance, 823, 827, 831, 837
Andersen Sash Balance, 823, 827, 831, 837
24-837
$47.95
VIEW >
How to replace an Andersen Window Balance
How to replace an Andersen Window Balance
VIDEO
WATCH >
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 856-317-6263 or at help@swisco.com.