multi-layered glass; insulated glazing
Refers to glass units with two or more panes separated by a spacer, often filled with air or gas for thermal or acoustic insulation. Common in construction and window manufacturing.
This window uses multi-layered glass, so it has high thermal insulation.
複層ガラスは結露を防ぐ効果もある。
Multi-layered glass also has the effect of preventing condensation.