We've had one of these since 1989 and it works great.
it is about 1/2 the size of the one that came with our FF.
Since our moho didn't have an external propane fitting---the first thing i did was go to AmeriGas with my Control/Regulator and had them remove the bottle fitting and replace that with a 5' hose assembly to connect to a regular refillable propane bottle--in my case a 1/2 lb. If i wanted to connect it to the fitting on my FF, i could just replace the propane bottle fitting with the mate to FF fitting.
I personally prefer a small bottle, so when the picnic table is 30' away--i can put the bar b on it. I do have very small stand for use when there are no tables.
I think most RV Parts stores have the fittings/adapters and hose to connect your bar b to the FF fitting.