North Carolina Locksmith Practice Exam 2026 - Free Locksmith Practice Questions and Study Guide

The vertical components of a door frame are referred to as the jambs. These are the parts of the frame that run vertically on either side of the door, providing support and structure. They play a crucial role in how the door hangs and operates, as they contain the hardware, such as hinges and locks, and allow the door to open and close smoothly.

Each of the other components mentioned serves different functions in a door frame. The sill is the bottom part that forms the base of the door frame, often elevated to keep water out. The header is the horizontal support at the top of the frame, distributing the load from above onto the jambs. The striker is the plate or area on the door jamb where the lock bolt secures when the door is closed, contributing to the locking mechanism's integrity but not to the structural framing itself. Understanding these components is essential for anyone involved in locksmithing or carpentry, as it helps in installing or repairing door systems effectively.