Channel Balance

A quick learner from Santa Clara, California 95054 says:
Length is 27 inches.

Would you tell me which model I need to order?
I like to order 12 pieces.
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Lauren from SWISCO responded:

Hello, thank you for posting,

It appears you have either our Series 351, with a 15-002 bottom attachment, or Series 390, with a 15-001 bottom attachment. Take a look at the image below to determine which balance you'll need. You will need a 27" balance with a 2640 stamp option.

Please review and let us know if you have any additional questions.

Comparison of the S351 and S390 balance shoes.
Comparison of the S351 and S390 balance shoes.

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