Anderson Balance

A quick learner from Tiverton, Rhode Island says:
June 3, 2017
The part I have is 1133 on bottom left, on right it says 03/15. I think I need your part #24-1133 but in the photo of the part it matches with 1133 on the left, but on the right it says 07/09.

Is 24-1133 the correct part?
PS: A contractor has measured twice and both times the order has been wrong. He is not returning calls. I've given up and decided to do it on my own. I found your great instructional video on youtube. Thanks so much for your help. Stacey
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Tom from SWISCO responded:
June 6, 2017
Hey, Stacey. I think "1133" is the most pertinent stamp. The other stamps just sound like dates. If you want, you can show us a picture of the stamps in question, that will allow us to know for sure. Otherwise, I think the 24-1133 is a match.
Andersen Sash Balance, 1133, 1131
Andersen Sash Balance, 1133, 1131
24-1133
$54.20
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