Wood door slabs need to be firmly installed on the door frame and matched with hardware and sealing accessories to achieve the corresponding functions of fireproof, smoke resistant, and sound insulation. At the same time, the door frame also needs to be closely integrated with the building wall. A good door frame structure design can ensure easy installation and tight integration. It is no exaggeration to say that sometimes the design of the door frame is more important than the design of the door leaf, and it is a vital section to ensure the overall function and beauty of the wooden door.