Identify anderson part

A home owner from PA says:
May 20, 2017
One picture is of the left side of the window the other is on the right. They appear to be the same unit but some different markings. Is 1031 the model number?
User submitted photos of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
May 24, 2017
Yes, that "1031" stamp is the key number we use to identify a match. With that in mind, I recommend our 24-1033.
Andersen Sash Balance, 1027, 1031, 1033
Andersen Sash Balance, 1027, 1031, 1033
24-1033
$54.20
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