Midrexâs primary business is direct reduction ironmaking. We build DRI plants that work day in and day out, year after. year to provide value for our clients so that they can make. the most of their investment and maximize their profits for. years to come. The MIDREXÂ® Process 2. The MIDREXÂ® Process.
Quick Answer. The maximum interior height of an entry door threshold is 1/2 inch, and up to 3/4 inch on exterior siding doors where it is essential to keep water out, as stated by the United States Access Board. These height limits improve wheelchair access to buildings.
Windsor Door â Panel Size. 1  Door panels â 63mm rounded profile on railes and stiles and can be revealed. 2  Maximum door height is 3000mm. 3  Maximum width door panel is 1800mm (Note: this depends on terrain category). Sliding Stacker doors rated at an air infiltration of for airflow through a closed window a positive and negative pressure differential of 1.00L/s m2.