Replace window balance and pivot shoe of 46 x 46 inch Michigan Vinyl double hung window

A quick learner from Swartz creek michigan says:
The replacement window parts are blue tip and the balance is 21 inches measuring as you show. We do not see 21 inch balances. We can send pictures if you need.
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Paul from SWISCO responded:
What Series were you looking at? Did you need our Series 600 spiral balance? If so, see our S600-21. If not, please clarify so that we can find you the right match.
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
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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