Solid iron/metal doors are made for use in mild and/or reasonable climates and the use of cast iron/steel doors isn't recommended in chilly local climate apps. Kansas and Missouri and generally, mid-west states are considered chilly climate spots. Even though regular manufactured door panels and frames are polyurethane foam loaded https://hyggeforhome.com/why-is-lighting-design-so-important-in-your-home-renovation/#comment-965