I have a GF223 and love it. The CM223 should be the same size, but instead of the offset gravity feed you would have the charcoal maze under the racks.
It is my understanding that they do not offer the CM - Charcoal Maze - anymore.
The CM was a maze - it was supposed to be similar to a Jedmaster ring of fire where you light one end and it slowly burns through the maze.
BBQinFL would know more than me but I am pretty sure the GF 222 CM is a gravity fed system with one less shelf than the GF 223. The CM at the end does not stand for Charcoal Maze.
Way to go Bob...I like it when a future Stump`s owner helps me do my job. The GF 222, GF 222 CM, and the GF 223 all have the same footprint...the ONLY differences are in the number of cook racks and the tire size.
GF 222 - 3 cook racks, 10" tires
GF 222 CM - 4 cook racks, 10" tires
GF 223 - 5 cook racks, 13" tires
This was posted by Joby on the Stump's Forum