Double glazing glass: 1. It is also called insulated glass,hollow glass. 2. specification: according to the customer's drawing Double Glazing glass:Insulated Glass is a multi-glass ... one time, but sealant & structural sealant or polysulfide sealant double sealing ensures a good sealing of IGU.Application: Residential ... 24A;3. Glass Thickness(mm):3, 4, 5, 6, 8, 10, 12, 15, 19, 22; 3+3, 5+5, 6+6, 6+8, ...