When seen from outdoors, the handing is often the operable panel. Should the remaining hand panel moves when seen from outside the house, It's really a LH door. Usually Test the door mfgr to be sure right handing, though. Plastic seals applied all over panel edges can conceal some imperfections, https://slidingglassshowerdoors82470.mybloglicious.com/54612414/not-known-details-about-shower-door-replacement