2020 channel balancer

A distributor from pine hill says:
1/2 wide stamped 2020 measures 21 inches long can you give me model number thanks chris
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
This looks like our S390-21 channel balance. Just make sure the sizes of the nylon attachments are the same. I also recommend our 2020 option.
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