Replacement channel balance 2730

A home owner from Irvine, California says:
I'm looking for channel balance of my window. The stamp on the old channel is marked as 2730. Which series I should use?
Thank you for your help.
User submitted pictures of channel balance attachments.
Profile picture of Paul
Paul from SWISCO responded:
Thanks for posting! Please take a look at our S390-28 channel balance with a 2730 stamp option.
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