I don't know about the 18. Home Depot stopped carrying the 18 completely and weber stopped making 18's with "gold" ash catchers. My guess is all 22" with different table options.
MAYBE there would be an outside chance of 26, as all the gas summit grills have more cooking space then the non summit grills and typically the summit name = bigger.
I am praying these prices of 1500 + are wrong as I don't see ever paying that. If it was in the $800 range was and truly a do it all large grill/smoker I could see selling some of my current webers to consolidate.
7 more days and we'll find out
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