Thermal Barrier door and window adopts a unique three-glass,two -vacancy and five-cavity heat-insulation construction. This seeries product adopts super-wide section and rational structual design to reduce profiles' linear density,while assuring their visual effect .The unique structural design enable the strength of product(doos and windows) is comparative to that of aluminium products with same section area. Precisiono and reasonable design has tremendousiy increased waterproofing performance;dual layer aluminium alloy profile provide you with wide ranges of colors for your needs in outdoor or indoor application.