SWISCO - The Replacement Hardware Authority

Anderson Sash Balance tension cord

A home owner from Maryland says:
One of the left tension cords broke and i have to repair it. I have removed the left side sash balance tension cord unit(I left the right one one for now so that there is some tension on the window sashes until i can replace both tension cord units). The markings on the unit are:

E43 9P27 377

These windows are circa 1977/78 I think. Could you let me know which parts would be appropriate replacements? Thank you in advance for your help!

Vince Walters
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Paul from SWISCO responded:
Based on your stamp of "9P27," I recommend our 24-939.
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