Double Glazed Unit (DGU) /Insulated Glass: DGU insulated glass is made by combining two or more glass sheets together separated by a dehydrated air space between them. The air used to fill the space is Argon gas to provide higher insulation. These glasses are mostly used for acoustic benefits.
Triple Glazed Insulated Glass Unit (TGU): TGU is another variant of insulated glass and is even more powerful than a DGU. Applications remain the same, and on the basis of the acoustic strength, you can make a choice between a DGU and a TGU.