Can’t comment on your nautilus suggested unit, however……..
If your rectangular shower is like ours…..24”x32”….this unit gives you way more room for the upper half of your body. It swings out of the way in both directions, so even when you’re not using the shower, the room will feel larger, and it’s a great way to hang up anything that’s still wet…..drips into shower floor.
I replaced both shower door units on our motorhome units. Probably one of the best mods I’ve done.
Ken and Terry
2018 Sunseeker 2430S-CD, nicely modified and carried by a 2017 Ford E450 Sport
Former Georgetown 330TS owner for 10 years with more mods than I can count