Duralite insulating glass spacers are a composite laminate design.
An Envirosealed window or door with the Duralite insulating glass spacer is designed to trap air inside small, sealed chambers, which act as insulating pillows of air that reduce energy loss. This can reduce energy costs and improve the energy efficiency of a window by as much as 10 percent.
Many windows have spacer options, which can make a real difference in performance and comfort. The better the glass edge insulates, the less energy is lost, and the more comfortable it is near the window. As this chart shows, Envirosealed windows with Duralite warm-edge window spacers provide the best performance among available options, whether in new homebuilding or remodeling projects.
Duralite® insulating glass spacer is designed to trap and retain more argon gas to reduce energy loss and increase efficiency. The outer spacer layer creates an impermeable barrier to keep out moisture which can lead to fogging inside the glass.