... .with grill inside ; 3.one piece is fix ,another can slide up and down; vertical windowsfactory 1.Material:UPVC &PVC,Aluminum ,as per your ... glass,Double glasses,Low-e glass,Toughened glass,Insulated glass,and so on.( insulating double glass(6*12A*6mm,5*9A ... .3m3/h.m;14.Watertightness:350pa;15.Packing: Foam inside and wood crateds,Standard exported packing;16.After-service: Owning a ...