Hi folks, I've been a long time lurker and I think it's time I contribute a little.
Poking around Amazon, I came across something that I thought might make a good alternative water pan. I wasn't sure about the actual size of it, but I knew it would be close. So, I reached out to Hubert, but haven't gotten any kind of response. Having more dollars than sense, I went ahead and bought it. Let's just say it fits my WSM 18 perfectly. So much so, that if I didn't know any better, I would have sworn it was made for it. It snugly fits between the brackets without any modification. It won't save anyone any money over things like the Brinkman pan, but it seems like another good alternative.
Hubert Chafing Dish Water Pan
It holds slightly less water than the stock pan but is much shallower.

Also, the dutch oven liners I had fit pretty good. The pan is a little big larger than the liners.

It seems pretty solid, but I have yet to cook anything with it, so I cannot attest to the durability. I don't know if they have one that might fit the 22.
Although I haven't pulled the trigger on it, this seems like it might be kind of useful too. Since this is a chafing dish water pan, it also has a food pan that goes along with it. I don't have this so I cannot make any guarantees how it may fit inside. On the Hubert site, it is one of the recommended associated items, so I assume they work together. Maybe this could have a use. The water pan is about 4 1/2" deep and this is 2 1/2". Maybe if you wanted to put sand in the water pan and water in the food pan? Or just leave an air space between the two and put water in the top? Not sure it's worth the extra $, but who knows?
Hubert Food Pan
Poking around Amazon, I came across something that I thought might make a good alternative water pan. I wasn't sure about the actual size of it, but I knew it would be close. So, I reached out to Hubert, but haven't gotten any kind of response. Having more dollars than sense, I went ahead and bought it. Let's just say it fits my WSM 18 perfectly. So much so, that if I didn't know any better, I would have sworn it was made for it. It snugly fits between the brackets without any modification. It won't save anyone any money over things like the Brinkman pan, but it seems like another good alternative.
Hubert Chafing Dish Water Pan
It holds slightly less water than the stock pan but is much shallower.

Also, the dutch oven liners I had fit pretty good. The pan is a little big larger than the liners.

It seems pretty solid, but I have yet to cook anything with it, so I cannot attest to the durability. I don't know if they have one that might fit the 22.
Although I haven't pulled the trigger on it, this seems like it might be kind of useful too. Since this is a chafing dish water pan, it also has a food pan that goes along with it. I don't have this so I cannot make any guarantees how it may fit inside. On the Hubert site, it is one of the recommended associated items, so I assume they work together. Maybe this could have a use. The water pan is about 4 1/2" deep and this is 2 1/2". Maybe if you wanted to put sand in the water pan and water in the food pan? Or just leave an air space between the two and put water in the top? Not sure it's worth the extra $, but who knows?
Hubert Food Pan