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Is Insulated Glass the Same as Vacuum Glass?

Insulated Glass Unit (IGU) vs. Vacuum Insulated Glass (VIG) In the construction industry, Insulated Glass Units (IGUs) have become one of the most popular choices for modern buildings. However, a common misconception is that IGUs are the same as Vacuum Insulated Glass (VIG). In reality, the two systems have completely different structures and working principles.