What is a door threshold?

A door threshold is the strip of material that sits at the bottom of a doorway, serving as a transition between two spaces, such as between a room and an exterior entrance. It provides structural support, helps to seal the doorway against drafts and moisture, and can enhance the aesthetic appearance of the entrance. Thresholds can be made from various materials, including wood, metal, or composite materials, depending on the design and function required. Additionally, they can help improve accessibility by providing a smoother transition between different floor levels.