Help to ID coil balance

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Home Owner from 45066

Mar 14, 2021 4:05 pm

No printing on metal coils or plastic piece. Both coils have snapped, but other pieces seem fine.

5 user uploaded images

6 Replies

Tom from SWISCO

Mar 16, 2021 10:24 am

Hello! Your pivot shoe looks like a match for our 15-111, which is designed to be used with the 1/2" thick Series 160 coil spring. As long as your shoe and cover are fine, then you could just replace the Series 160 spring without issue. Look it over and let me know if you had any questions!

Home Owner from 45066

Mar 16, 2021 12:17 pm

Your recommendations look spot on. Thanks! As stated, my coils do not have any markings. How can I determine which lb balance to order? My double hung vinyl windows measure approx 35" wide by 59" inches tall, with 2 coils on each side.

Tom from SWISCO

Mar 16, 2021 2:07 pm

Sorry for missing that part of your post. No markings can be an issue. So, in this case, what you'll have to do is get the exact weight of your sash. Any common bathroom scale should do here. Once you get that weight, you then want to divide it by the number of springs you have. Let me know those two numbers and I'll be able to make a recommendation.

Home Owner from 45066

Mar 18, 2021 12:33 pm

The sash weighs 18.5 lbs and has 4 coils (2 on each side). 18.5 / 4 = 4.625, so I'm guessing replace with 4.5 lbs coils?

Tom from SWISCO

Mar 18, 2021 1:54 pm

Yes, I agree. I don't think you'll miss that half pound of difference. The 4.5 balances should work perfectly fine for you.