Window balances

A contractor from Pennsylvania says:
Need to replace these broken Dove Window balances. Please advise. Thanks!
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Bob from SWISCO responded:

Thanks for posting. Looks like you need a new spiral balance. See either our S600-18 or S900-18 . The only difference between these two balances is the diameter of the outer tube, so compare both with your old balance to see what matches best. Also make sure that all other dimensions such as length check out, just to be safe. You'll need a red color tip option. Many thanks.

A contractor from Pennsylvania says:
Thanks for your help, Bob.
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Bob from SWISCO responded:

Anytime! We appreciate your business.

How to replace a tilt window spiral balance.
How to replace a tilt window spiral balance.
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How to Identify a Replacement Spiral Balance
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How To Choose the Proper Spiral Balance Tip Color
How To Choose the Proper Spiral Balance Tip Color
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How to adjust a spiral balance on a tilt window
How to adjust a spiral balance on a tilt window
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