RJA supply air diffuser

RJA is a supply air diffuser for large air volumes. The device is well suited for heating and can be installed on wall, ceiling or duct. RJA has two throw pattern options: wide or narrow throw.

Air flow range

40-650 dm³/s, 144-2340 m³/h

Duct sizes

Ø 200-500 mm


For ceiling and wall installation

Ventilation type

Diffusion ventilation

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  • Excellent, for example, in industrial premises for large air volumes
  • Wide or narrow throw
  • Well suited for heating