Glass is actually 0.20 inches thick (5 millimeters)

A home owner from WA says:
August 1, 2018
Will the 1/4" frameless shower door seal hang on, or will I have to stick it on with a little sealer?
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Dave Sr. from SWISCO responded:
August 7, 2018

In my experience these should just hang on, but if not then you could possibly use a type of adhesive like a clear silicone caulk. 
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