Solid iron/steel doors are suitable for use in delicate and/or moderate climates and using solid iron/metal doors will not be encouraged in cold local climate apps. Kansas and Missouri and normally, mid-west states are regarded as chilly local weather areas. When normal built doorway panels and frames are polyurethane foam https://www.greenbuildingadvisor.com/question/what-manufacturer-makes-the-best-recipe-for-a-cement-based-siding-for-a-new-england-green-home?cid=271008&discussion=response#comment-271008