This lintel is to provide support to the wall above and surrounding the door frame.

What is the purpose of a door lintel?

A lintel is a structural horizontal support used to span an opening in a wall or between two vertical supports. It is frequently used over windows and doors, both of which represent vulnerable points in a building's structure. Lintels are generally used for load-bearing purposes, but they can also be decorative.

Do I need a lintel above my door?

4 Answers from MyBuilder Window & Door Fitters

Old houses where built on timber windows and door frames. As they do have lintel in the inner most likely they won't on the exterior. If there is a lintel there a tradesmen will be able to spot it. But once the timber frame is removed a lintel would be required.