Tom from SWISCO responded:
December 8, 2015
Thanks for posting. I'm afraid I can't determine what you have based on this information alone. I recommend that you look at our Channel Balance Home Page and follow the steps in order to find the Series that best matches what you have.
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Tom from SWISCO responded:
January 12, 2016
Sure! A stamp of 28 2 usually corresponds to our 2820, while a stamp of 28 C usually corresponds to our 2830. You can also weigh your sashes to confirm, we should have a chart on each balance store page that shows how much weight each stamp can support.
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