The Maximum Height over Base control sets the maximum allowable prism aspect ratio (that is, the ratio of height over base of the base triangle). When the prism aspect ratio reaches this value, the height of the prisms stops growing. That is, new prisms continue to form, but the heights of the prisms will not increase. Valid values are from 0.1 to 5. The default is 1.0.

For 2D inflation, the Maximum Height over Base control helps to maintain a good size ratio. Once the inflation height is greater than the local mesh size multiplied by the value of Maximum Height over Base, the inflation height stops growing. New layers continue to form, but the heights of the inflation layers will not increase. New layers that form will be equal to the inflation base size multiplied by the value of Maximum Height over Base.