Need new balance spring assemblies

A home owner from Spokane Valley, WA says:
January 5, 2020
These assemblies are 26" long not including the plastic ends. The only identification I can find on the metal channel says "25 4 CALDWELL GM".
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Casey from SWISCO responded:
January 7, 2020

Welcome to SWISCO. Let's have you start with taking a look at our S385-26 channel balance. You want to confirm that your bottom balance shoe is 1-3/32" in depth. Look at the illustration below on how to properly measure the depth of your bottom shoe. If this balance is a match, then you can go with the 2540 option that holds a sash weight of 19-25 pounds. 

Alternate view of 15-004
Alternate view of 15-004
26" Series 385 Channel Balance
26" Series 385 Channel Balance
S385-26
$10.55
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