The NEX swirl diffusers are designed to be applied in air conditioning ventilation and heating systems. They can be mounted in false ceilings or suspended from ceiling. The design of their concave elements and its radial arrangement in the diffuser cause a swirl air supply with a coanda effect, which provides a high level of induction rate of the air in the atmosphere and reducing the stratification. Concave elements emit a uniform air flow all over the passage section. The NEX series diffusers admit a flow variation of 60% keeping the air stream stable. These diffusers can be used from 2,6 up to 4 meters high and at a temperature differential up to 12º C.