many moons ago I worked as a double glazing designer, and while some aluminium sections were designed to be reversible (ie the rebate the door sits in was a separate entity to the frame, this really only applies to high end industrial double glazing, so it may be possible, but is unlikely without rebuilding completely the frames, alternatively if the frame is just the door, you may be able to take the complete frame out and reverse it, but that may well reverse the handing of the door at the same time.