Wooden Window spiral balance

A quick learner from Cherry Hill says:
Do you carry this type of balance? It's a 5/8. The bottom latch of the balance is suppose to be screwed into the window but it broke off.
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Tom from SWISCO responded:

We don't carry this specific type of balance, which I don't believe is made anymore, but you can use our Series 500 as a substitute, along with a bottom bracket like our 17-012. This setup works in much the same way. Let me know what you think.

How to adjust a spiral balance on a non-tilt window
How to adjust a spiral balance on a non-tilt window
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