Hi rschweik, All of the Region Mapper sizes are in the file names, however they are not intended to be a modular grid building set like most of my other sets, instead they are designed to be used build more organic city layouts with the grid turned off all together. I used this approach to create a series of city building sets that avoided blocky layouts as a result of the modular style techniques. When creating with this set, it is highly suggested to download the set and assemble your map in Photoshop or Gimp, and if you are assembling your map in Roll20, to turn the grid off all together.