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.
Your Door Size. Your Way. The 36-inch wide entry door is the standard door size of California home-building. The vast majority of homes have an entry door thatâs 36 inches wide. If you just want to replace your 36-inch door with a new, more contemporary looking 36-inch model, Todayâs Entry Doors gives you lots of choices, including a wide range of style, color, glass and hardware options.