Tom from SWISCO responded:
June 12, 2013
If your stamp is 14 3, then I think you might want to recheck the length of your metal channel. It should measure 15" long. Take another look and let me know!
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Tom from SWISCO responded:
June 13, 2013
Not a problem! Yes, usually a stamp of 14 3 corresponds to our 1430 option. It wouldn't be a bad idea to weigh your sash and compare it to the 1430 strength just in case, though.
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