Rich Dahl
R.I.P. 7/21/2024
In that vid from BBM , they had a brisket on a ex4 and it looked like a tight fit , to me. The ex4 has an 18" X 24" cooking grate. It would also be hard to lay ribs across the grate, they would have to length wise, probably get three racks lenthwise.
Just depends upon how many ya cook for , or if you want to make cooks cost effective and get as meat per pellets used as possible.
I'm caught in that dilemma, although I have no problem getting a 15 pound brisket on my 18.5 WSM so 24"X 18" would be fine. With just the two of us I would most likely be heating a lot of air space with the bigger one. Ribs I've never done more than 3 racks at once and very seldom does that happen.