ES100 super thermal break window has incomparable heat insulation property. The general aluminum alloy window frame does not insulate heat as it is a good heat conductor which results in major heat gain or heat loss at your room. With this super thermal break window which is filled with special insulation material, heat conduction or noise can be reduced significantly.
U factor: 0.23
Air Leakage <0.2 cfm/ft
Wind Pressure Resistance : 55 m/s