coil balance

A quick learner says:
Century window 336464 15 lb sash.
User submitted photos of a coil window balance.
Profile picture of Tom
Tom from SWISCO responded:
I'm sorry, but I'm not sure what your question is. It looks like you ordered our S140-8, however, and your pictures show that compared to your old balance. I'm going to guess and say it didn't work for you, and that you need the correct balance.

If so, let's start by looking at the shoe. Yours appears similar to our 15-175. Do they match? Make sure to carefully compare the dimensions to confirm. If so, you should also see our Series 152 coil spring.
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