Replacement Channel Balance for Non-Tilt Migard Window

A home owner says:
I need one replacement channel balance for a non-tilt Milgard brand window. The right channel balance (oriented from inside the house) is broken, the left channel balance is working. The marking on the broken channel balance reads "26-4 BA CMC 11," while the marking on the functional channel balance reads "26-4 BA CMC 7" (see attached pictures). I need to replace the 26-4 BA CMC 11 channel balance.

The metal channel is 1/2" wide and 27" long. With the plastic clips on each end it is 28" long.

The window sash that it supports weighs 19.2 lbs according to my bathroom scale.

Please let me know if you need more information.
Thank you.
User submitted photos of a window balance.
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
Good morning, and thank you for posting. I think you might want to take a look at our S385-27 channel balance. Does this look like a match? Compare its dimensions carefully with your own hardware, especially those of the nylon attachments. I also recommend our 2640 option.
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