... 1.2mm, the surface after galvanized anti-corrosion processing6.Glass:single glazing(4mm,5,6,8,10,12mm),double(insulating)- (5 ... or custom made.13.Characteristics:Easy open,saving outside and inside space;three-sash and three-track window can open to its 2/3 ... +sliding rail+handle with driving lock/(bump lock/cresenet lock/single-point lock);handles with(out)key,Anat hinge,transmission,Chinese ...