balance for a double hung window

A home owner from colorado springs, co says:
purchased these Accent Windows, here in Colorado, in 1997.
coil spring balance just snapped. picture shows the number stamped on the back of the spring.
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Tom from SWISCO responded:

Thanks for posting! Your shoe looks like our 15-087, which is made to work with our Series 180 coil spring. I feel pretty confident that this spring is what you need.

If your shoe, housing, and bracket are in good condition, you can reuse them.

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