Can you expand on this? What films are available "special order"?
Click on the link posted above for one of the participating dealers - Badger Graphics.
Primarily, this annual offering is for large format photographers and, in particular, ultra large format photographers who use unusual sizes of film that aren't normally marketed. For example, FP4+ in 4"x10" size.
The dealers gather together the orders, and Harman then custom cuts them.
There are smaller sizes - such as 1/4 plate (2 1/4" x 3 1/4") sheet film, and some other unusual products like 120 backing paper without the film.
As a part of the program, Harman is willing to fill these orders for all the disparate and unusual sizes even if there are very few orders in a particular size.