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Air Distribution / Floor Diffusers

Floor displacement diffuser Q-BD-N 215

Installation in floor plenums; air supply from below, to generate low-turbulence, radial horizontal flow for displacement ventilation.​


  • Radial, horizontal jet Dispersion
  • For low floor plenums, installation with floor insert in floor orifice
  • Twist element and clamp insert made of plastic
  • For air connection to the ‘pressurized plenum’ system
  • Floor insert with perforated throttle disk
  • Available on request with central recess to accommodate floor covering


Volume flow rate range:

5.5 – 14 l/s [20 –50 m³/h]

Nominal size:

DN 215

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