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Door Adjustable Security Louver Aluminium Panel Exterior Glass Louvre Window on China WDMA Type:Sliding Windows Specifications of all pvc window:Door Adjustable Security Louver Aluminium Panel Exterior Glass Louvre Window Product Description A new sunshade product, which can adjust the light transmission for sure the indoor light. It can be improve thermal performance, significantly reducing heating and air conditioning costs, it also reduce interior condensation in cold climates. Insulated glass blind Manual operate Automatic by remote control for choose. Details Shutter glasses with blinds