Ole, I have wanted to comment on this in previous posts, but hesitated posting anything that could seem to be correcting those who clearly know more than I do. I have a Folmer and Schwing 5x7 and a Rochester Optical 5x7. All of the holders I have, including the newer ones (Fidelity) and the various yard sale, auction and Ebay varieties I've bought, fit both cameras nicely. Perhaps it is only the newer cameras which are picky, preferring their own brand?
Originally Posted by Ole
In general, I think any holder made of wood is likely to be a plate holder. It may or may not come with a film insert, but I've yet to come across a wooden holder exclusively designed for film.