However, Thompson seating do have a viable 18.5in wide seat unit allowing 11 abreast A380 main deck fit available. The format is a little different
We're clearly talking about some serious Tardis technology here.
The A380 main cabin at its widest is 6.54m (257.5"), rather less at the seat squab height.
I'd be fascinated to see how 11-abreast 18.5" seats, plus armrests (14 of them) and two aisles can possibly fit in the available width.