NEX-C Round Swirl Diffuser
NEX-C Round Swirl DiffuserNEX Swirl Diffuser, choice of shape and concave element colorsNEX-C Painted Black With Conical Plenum Exposed DuctNEX-C Painted Black With Conical Plenum Exposed Duct RestaurantNEX-C Painted Grey with Night Elements and PERFAIR-CT Exposed DuctNEX-C Painted Grey Exposed With PERFAIR-CS Cylindrical PlenumNEX-C in Architectural Office Design, IN-RGY Entrance, Street ViewNEX-C Swirl Diffuser in Architectural Office Design, IN-RGY EntranceNEX-C Swirl Diffuser, Open Ceiling With Visible DuctNEX-C Architectural Swirl Diffuser, in Employees Lounge, IN-RGY OfficeNEX-C Architectural Swirl Diffuser in Employees Lounge, IN-RGY OfficeNEX-C Architectural Swirl Diffuser in Employees Lounge, IN-RGY OfficeShared Office Space With NEX-C Architectural Swirl Diffuser, IN-RGY Headquarters


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Architectural Aluminum Round Swirl Diffuser


NEX-ALU-C Architectural Aluminum Round Swirl Diffuser is ideal for open ceiling and drywall applications in rust-prone environments.


More than just an architecturally-appealing air diffuser, the NEX supplies air in a high induction swirl airflow pattern for maximum efficiency and comfort. NEX is one of the most stable and reliable commercial ceiling diffusers.

Product Description

Aluminum NEX Concave Elements Swirl Diffusers by EffectiV HVAC and MADEL® are designed to be used for air conditioning, ventilation and heating in humid environments. The design of unique concave elements of diffusion in radial arrangement supplies the air in a swirl pattern while leveraging the coanda effect. The resulting airflow is more evenly spread and its high induction ratio helps reduce stratification.



NEX Concave Elements, combined with a PERFAIR high-performance plenum mixing box, emit a uniform airflow all over the passage section despite variations in supplied air temperature and velocity, as well as non-ideal duct installation.


The NEX series diffusers admit a flow variation of 60% while keeping the air stream stable. For optimal conditions, NEX diffusers may be used in ceilings 8.5 up to 13 feet (2.6 up to 4 meters) high and at a temperature differential up to 54ºF (12ºC).


The air pattern reliability, high level of induction rate and reduced air stratification allow for designs with a much higher level of comfort and provide opportunities for significant energy savings.


The NEX architectural appeal is also enhanced by the fact that its concave elements block any direct view of the plenum and duct behind it.


The face and plenum box are ordered separately and attached together with a screw through the face fixed in the plenum crossbar.


NEX-C is ideal for open ceiling with visible duct, as well as drywall ceiling.


Additional Information


25″ Diameter

Concave Elements Color

White, Pistachio Green, Lavender Blue, Red, Night



Adjustable Airflow



BIM Objects

CAD Files

3d View