500x75 Low profile duct

500×75 Low Profile Duct | Pro-Air Supplies

The 500×75 mm low profile duct is designed for high-capacity ventilation systems where greater airflow is required but ceiling space is still restricted. 

Its wide rectangular profile provides a significantly larger internal area, making it ideal for commercial HVAC projects, apartment developments and central exhaust systems.

The 500×75 flat channel duct can typically handle airflow up to approximately 260–300 L/s (930–1080 m³/h) when correctly installed, allowing efficient air movement while maintaining controlled air velocity and low-pressure loss. The smooth internal surface helps improve system efficiency and minimize noise.

Importantly, the 500×75 duct assists designers and contractors in meeting the airflow requirements of the latest National Construction Code (NCC) for mechanical ventilation in modern buildings. 

At Pro-Air Supplies, this size is commonly used where higher airflow volumes are required while still maintaining a low-profile ducting solution for tight ceiling cavities.

Pro-Air Supplies stocks 500×75 low profile duct systems for HVAC contractors across Melbourne and Victoria. Available for pickup from our Pakenham warehouse or delivery across Australia.