Jambs are the vertical components that form the sides of a door or window frame. They provide structural support and help to hold the door or window in place. Typically made from wood, metal, or other materials, jambs can also be designed to enhance the aesthetic appeal of a building. In addition to their structural role, jambs can be finished with various trims or moldings to match the interior decor. They are essential for ensuring that doors and windows operate smoothly and securely, contributing to the overall functionality of a space. Proper installation of jambs is crucial for energy efficiency and security.