Milgard window channel balance

A home owner from 92128 says:
Hi,
I've got a few windows with busted channel balances. The info stamped on all of them is "26 4 HK Caldwell". I'm hoping someone can point me in the right direction! Thanks!
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
Take a look at our S385-27 channel balance, this may be a good match.
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