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.
Standard Aluminum Entry Doors sizeâs are: 6âft. 8â³ in Height by 36â³ Wide. * Please Note: United Inches is where you add the height and the width of a door. I.e : the standard Aluminum Entry door would measure 84â³ inches in height by 36â³ wide, for a total of 120 united inches.