Metal is a common practice in the HVAC industry. This process involves the creation of custom ductwork that is tailored to the specific needs of a building's ventilation system. By fabricating the ductwork in-house, HVAC professionals can ensure that the ducts are the correct size, shape, and configuration for optimal airflow and energy efficiency. In addition, in-house duct fabrication allows for greater quality control, as the ducts can be inspected and tested before installation. This can help to prevent leaks, reduce noise, and improve indoor air quality. Overall, in-house duct fabrication is a valuable tool that can help HVAC professionals deliver superior results to their clients.