That one is their level 2 stand. I suppose you could try it as a small fb, but you are not going to get the benefits of the greater surface area with it being so small. I would also be worried about it sliding around while stirring the mash and having grain collect underneath. If you were careful it might work.
The real benefit to the filter is using it along with the fb. I noticed a huge difference when I added the filters under the fb. Wort runs clearer, faster and I dont worry about a little grain slipping by the sides of the fb since that additional filter is in place.