Correct. The original question was about a 55-gallon drum smoker, and the rack Target sells should fit that. I should have been clearer: Gateway makes two sizes of their hanging rack. Their smaller size, for their 30-gallon drum smoker, fits the WSM 18.5 very well, but Target does not sell that size. I bought the smaller rack from a different online source. http://www.shopperschoice.com/item_item_2968600.htmlI just accessed the Target.Com Website and it only shows a Gateway Rib Rack that fits their "Gateway" 55 Gallon Drum Smoker which is 22" wide and would not fit a WSM 18.5".
Correct. The original question was about a 55-gallon drum smoker, and the rack Target sells should fit that. I should have been clearer: Gateway makes two sizes of their hanging rack. Their smaller size, for their 30-gallon drum smoker, fits the WSM 18.5 very well, but Target does not sell that size. I bought the smaller rack from a different online source. http://www.shopperschoice.com/item_item_2968600.html
Larry, I ordered the rack from Target. Measurements will definitely work. I am actually good from 22" to 21" due to the pegs/brackets that hold up the cooking grates. Also I looked at the WSM with a bit more detail and if I'm correct it's configuration would not work on a drum smoker unless the lid were off. The WSM rack looks to be designed with the domed lid in mind. Anyway, thank you all for the help.
The Gateway drums have two grate levels, like the WSM. I assume the ring would site on the arms that hold the lower grate level. In fact, looking at the rack, I'm not sure it would fit on the WSM's top grate location, but please let us know if it does.