not sure of replacement parts

A home owner from Washington State says:
I'm not sure my current parts are Swisco. Does it matter? I hope you can help me identify the correct replacement parts. The metal part of the channel balance is 27 1/8 inch long, not including the plastic top or shoe. It is 1/2" wide. Printed markings say "26 4 CALDWELL HM"
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
Hello! I believe our balances can still replace yours, yes. Specifically, I think you should consider our S385-27 with a 2640 option. Look it over and let me know what you think.
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