alenco replacement channel balance

A quick learner from California says:
The stamped number is 1120 W. The metal channel portion measures 12" long and with the plastic 13" long. What is the part number I should use?
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Bob from SWISCO responded:

Thanks for posting. Could you show us pictures of the nylon attachments at either end of the balance? We need to ID those fittings to determine the balance Series you need. Many thanks.

A quick learner from California says:
Thanks, Bob. Here's the photos
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Bob from SWISCO responded:

Thanks! I'd start by looking at our S390-12 channel balance. This comes with a 19-002 top and 15-001 bottom, so as long as those match up (and I think they will) then you should be good to go.

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