So I’m giving this three stars as a grate system for the Chudbox because I have to take it off and store the whole system to use the Chudbox as a direct heat cooker, which is almost always. I bought this grate system to try to keep myself from buying a Chud grill, honestly. Lol. If you had this for the grill and it stayed on the grill without having to move the fairly heavy, and most often a bit dirty, panels all the time, it’s probably worthy of four stars. I will say the top grate did not slide easily and it was because the length of the panel wasn’t enough or perhaps the frame it fits in expanded after being heated up. I didn’t test how it slid before I used it. A sort of simple fix was to pinch one side of the frame and bend it inwards a little bit (see pic). That seems to have done the trick but it makes removing the bottom grate a tiny bit more cumbersome as I have to pull it away from the bent in side. Not a terrible inconvenience, but this isn’t a $30 grate, it was over five times that. I think I prefer using the expandable grates as this is sort of a pain to clean as well. Again, if it lived on my grill I’d not care as much how clean it gets, but since I have to remove it and store it somewhere it’s a consideration.