Channel balance string broke

A home owner from Charleston, SC says:

String on one channel balance broke so need to replace both in one window. Just want to make sure I've selected the correct part. The channel is 29" long. I've attached photos of the various sections as well as the 28C imprinted on one end.

Thanks for your help.

Rachel

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Paul from SWISCO responded:

I'd be happy to help identify your balance. It looks like you would need our 3/8" S800-29 balance based on your measurements. You'll also need to choose option 28C for your balances spring weight. Let us know if this does the job or if you have any more questions. Thanks for shopping with us!

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