I was thinking at least 2ft. in dia. So it feels like a campfire. We had a propane one for the fire ban, when we built the Kenyon campsite. We froze our asses off, because it was more like an open BBQ, but we all huddled around like it was a fire for the light.
Yeah I tried one of those once at my parents RV....it sucked nothing like a real camp fire for pure and enjoyment. Its not camping with out a "real" fire (real i.e. 2ft minimum). If Brent or Phil are along there never any worry of that.