Window Balance 26 4 CALDWELL GM

A home owner from Cheyenne, WY says:
The window was originally installed new when the house was built in 1993. It's a vinyl Wenco window. The pictures show the broken cord from the pulley system in the balance. The sash weighs 18.8 pounds and the channel is 1/2 inch wide and 27 inches long (metal part only). Imprinted on the channel is: "26 4 CALDWELL GM"

Please let me know if you need better photos or more details.

Thanks!!
User submitted photos of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
This could be either our S380-27 or S385-27, I'm just not sure which. It will depend on the size of the bottom shoe; that is the only difference between these two balances.
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