Channel balance, Japan 122

A home owner from 08005 says:
21 inches number is Japan 122
channel balance
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Tom from SWISCO responded:
Thanks for posting. Take a look at our S700-21 channel balance, this looks like a match. For the stamp, I believe our 2020 option corresponds to your existing "Japan 122" stamp.
A quick learner from New Jersey says:
Thanks I will give it a try
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