What is referred to as a continuous passageway for air transmission?

A duct system is specifically designed to facilitate the continuous passageway for air, making it essential for HVAC (heating, ventilation, and air conditioning) applications. Ducts are constructed from various materials, such as sheet metal, fiberglass, or flexible plastics, depending on their intended use, and they play a crucial role in efficiently distributing conditioned air throughout a building.

In a duct system, air is moved through a series of connected pathways that ensure a consistent flow, which is vital for maintaining desired temperature and air quality levels in different spaces. Properly designed ductwork enhances airflow efficiency and minimizes energy loss, making it a key component in effective ventilation strategies.

While other options like pneumatic systems, airflow units, and ventilation shafts have their purposes, they do not serve the same primary function of providing a continuous and dedicated passage for air transmission in the same way that a duct system does.