Multi-cavity five-cavity or more insulated metal window frame refers to the sealing method in which the metal window opening sash and the window frame form two or more cavities after being completely closed. The most common ones are 2 cavities and 3 cavities. Multi-cavity insulation profiles, in layman's terms, add a layer of insulation material from the middle to prevent external heat from being transferred inside.
It not only achieves thermal insulation performance, but also has various functions such as waterproofing and anti-frost, which greatly improves the thermal insulation performance of doors and windows and reduces building energy consumption.