AXO-S400 Radial Vanes Adjustable Swirl Diffuser for Lower cfm
AXO-S400 Radial Vanes Adjustable Swirl Diffuser for Lower cfmAXO High Induction Diffusion Vanes With Alignment Blades on the BackAXO Vanes Face Easy to Clean


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High Induction Adjustable Square Swirl Diffuser For Lower CFM


Recommended between 100 cfm and 250 cfm. For other cfm ranges, see AXO-S300, AXO-S and AXO-SX.

AXO-S400 High Induction Adjustable Vanes Square Swirl Diffuser has fewer diffusion vanes than the standard AXO-S model. Available with black or white diffusion vanes, in 24″ x 24″ (605 mm x 605 mm).

AXO high induction swirl diffusers greatly help improve comfort and energy efficiency in commercial buildings when compared to standard diffusers. AXO series can supply high volume of air at relatively low sound power and has a high tolerance to air flow variation and the angle of the duct when entering the diffuser. They offer a very reliable performance and are ideal for VAV applications.

AXO diffusers can be adjusted to supply the air in a swirl pattern (default), directional patterns and vertical downward patterns.

Product Description

AXO swirl diffusers by EffectiV HVAC and MADEL® are designed to be applied in air conditioning, ventilation and heating systems. The design of their vanes and radial arrangement supplies the air in a swirl pattern while leveraging the coanda effect. The resulting high induction ratio helps reduce stratification.


Their individually adjustable vanes support multiple angles to adapt the airflow to virtually any environment. Their sectored vanes, combined with a PERFAIR high-performance plenum mixing box, emit a uniform airflow all over the passage section.


The AXO series diffusers admit a flow variation of 60% while keeping the air stream stable. For optimal conditions, AXO 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 adjustability, high level of induction rate and reduced air stratification allow for designs with a much higher level of comfort and provides opportunities for significant energy savings.


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


AXO-S400 square diffuser for lower cfm is available in 24″ x 24″ (605mm x 605mm) only.


Additional Information


48″ x 12″


Plastic ABS Vanes, Steel

Adjustable Airflow



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