Anderson sash balance

A home owner from Ringwood, NJ says:
August 23, 2021
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
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Emily from SWISCO responded:
August 26, 2021

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:
August 26, 2021
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?
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Paul from SWISCO responded:
August 27, 2021

The 24-737 is for a sash weighing about 14 lbs and the 24-837 is for a 16 lb sash.
Andersen Sash Balance, 725, 727, 731, 737
Andersen Sash Balance, 725, 727, 731, 737
24-737
$54.20
Andersen Sash Balance, 823, 827, 831, 837
Andersen Sash Balance, 823, 827, 831, 837
24-837
$54.20
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