... Glazing or Triple Glazing)3)The nor thickness of air layer:6mm,9mm,12mm,16mm,19mm(1/4", 11 ... /16", 19/32", 5/8")4)Gas Filling: Dry air, Argon5)Sealant: butyl rubber sealant with polysulfide sealant or structural ... Glass Standard, ChinaApplications :Restaurant,Hospitals/Schools,Airports,Freezers/Refrigerators,Air conditioned Buildings and other places needing indoor air condition. Insulating Glass