Balance identification

A handy person from West Palm Beach, FL says:
Fixed window. 1/2 inch by 30 inch. Printed number reads 2920.

Is this S377?
User submitted photos of a window balance.
User submitted a photo of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
Hello! This looks like a balance for a Pam Am window. See our S377-18 side load balance to start out with. I would also recommend the 1720 option.
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