Window balancers

A home owner from 19053 says:
Looking for replacement balancers. Only numbers visible are
B37 4#19 10-77. If you could give me correct replacements that would be great. Thank you.
User submitted a photo of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
Hello! Based on your stamp of "4#19," we recommend our 24-431.
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