I have been converting a bedroom into a bathroom. To do this I have
laid a concrete floor onto the floor boards and tiled on top. This was
to ensure a fall to the floor drain. This all works and now I have
turned my attention to the door way.

I have a step up of about an 1.5" from the landing into the bathroom.
I know there are threshold plates which can step up to allow for
changes in levels of about 2cm, but can anyone advise as to other
products which will allow for a greater change in level?

Thanks
Nick