Ours is also hinged on the right side and opens from the left. It has a rubber sweep on the top and the bottom like sledgehammers. Mine could open either way and work so it was installers or designers preference.
Craig & Terry in Tennessee
2013 Pinnacle 36 KPTS, Voyager Rear View Camera
2012 F350 CC LB King Ranch, 6.7L TD, Ford 25K hitch, TM TPMS, Diesel Site Coolant Filtration System