WINDOW BALANCE COILS

Home Owner from Lexington Kentucky
Hello,
 I have coils with 5K stamped on them. They appear to match your S-152-5 coil.
 Can you give me your part number to match the 5K?
The sash weighs 10 LB 12oz.
Do I need S152-5 or S-152-6?
2 Replies
Bob
Bob from SWISCO
SWISCO
Expert

Thanks for posting. If you're certain you have the S152-5 5 pound coils, and if the sash weighs 10 lbs 12 oz, then go with the S152-5 5 pound springs. One for each side of the sash will equal 10 pounds of support overall--being within 1 pound of the actual sash weight works just fine. If you want to be certain, send photos of the pivot shoe the springs attach to, as the identity of the shoe tells us the spring identity. 

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