Round Ceiling Diffuser (with Damper)

Round ceiling diffusers with an integral damper terminate circular ducting neatly at the ceiling while letting you balance the airflow right at the diffuser. The circular face distributes air through 360 degrees for even coverage, and the corrosion-resistant construction keeps its looks in kitchens, bathrooms and commercial interiors alike.

Five sizes are stocked to suit standard round duct: 150mm, 200mm, 250mm, 300mm and 350mm. The built-in damper means you can fine-tune each outlet during commissioning without adding a separate in-duct damper — particularly useful on runs serving several outlets, where each diffuser needs its own adjustment to balance the system.

Order by 3pm for next-day delivery on stocked sizes. For square-face alternatives see our 4-way ceiling diffusers, or browse the full ceiling grilles range.