Which of the following describes the parts of a door system?

The description of the parts of a door system that includes the door and its edge is accurate because these components play a crucial role in the overall function and integrity of the door. The door itself serves as the primary barrier and is typically the most visible part of the door system, allowing for access or closure. The edge, often referred to as the door edge, is critical in defining the structural stability and security of the door; it can also incorporate features such as weather stripping or edge seals that enhance the door's performance against air and water infiltration.

Understanding the parts of a door system is essential for assessing its effectiveness and compliance with safety standards, especially in the context of lead inspection where sealed environments are critical to prevent lead exposure. While insulation, paneling, glass, fittings, and hardware are components related to the overall functionality or aesthetic of a door system, they do not encompass the core elements that make up a door structure in the way that the door and edge do.