Round Adjustable Aluminum Diffusers

Airvector’s DCG Aluminum Adjustable Round Diffusers are recommended for heating, ventilating, and cooling applications. DCG diffusers provide a 360° air diffusion pattern and excellent performance in VAV systems.

Full adjustability is possible by rotating the inner core clockwise or counterclockwise to move the cones up or down, changing from horizontal projection to vertical projection in accordance with the supply air temperatrure and reducing stratification. DCG diffusers provide great performance in temperatures differentials up to 54ºF (12ºC) and are suitable for premises with ceilings 8.5 ft (2.6 m) and higher. Original design by Lievore, Altherr & Molina for Madel.


  • Heavy-gauge spun aluminum construction
  • Fully adjustable
  • Powder paint coating – White (Custom Finishes Available)
  • Available in Imperial and Metric dimensions


DCG   Aluminum Adjustable Round Diffuser