stamp 3 on balencer

A handy person from Seattle says:
On one that is 23" long the stamp is 22 4 so this would be 2240.

On the other the stamp # is 25 4 and it is 26" long. What number would this on be?

Thanks, Al
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Tom from SWISCO responded:
A stamp of 22 4 usually corresponds to our 2240 option, yes. With the same process, a stamp of 25 4 corresponds to our 2540 option. You may want to weigh your sash just to make sure these are accurate, though.
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