One of my customers does double glazing doors etc and knows of somewhere, he had one made for the pub across the road from his house it was in the place of a window but now leads out onto the lounge roof for the tenant to get to their roof garden. I had a look and it is TINY.
Hi Norm,
Can you get me the details of the supplier, I'm tearing my hair out here...
All the suppliers I've contacted can't do a door small enough in either uPVC or aluminium. I have tried dozens of them and they all say the same

For what it's worth the overall size of the frame needs to be approx 740mm wide by 1830mm high, preferably without a cill.
As for the style, something like...
