SWISCO - The Replacement Hardware Authority

Stamp Option

A handy person from California says:
My Channels has a stamp of "26 4 AM CMC 2"

Should I assume this means 2640?

Thanks

Ryan
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Tom from SWISCO responded:
Yes, a stamp of "26 4" usually corresponds to our 2640 option, but you can always weigh your sash to be sure.
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