Yes, two 12-14 pound turkeys will fit in the 18.5" or 22.5" WSM, one on each cooking grate. The distance between the top and bottom grates is 7.5" in the 18.5" WSM and 9" in the 22.5" WSM, so purchase birds that are broad and flat. You may want to take a ruler or measuring tape to the grocery store...better safe than sorry.