DT swirl diffuser
Air diffusers, plenum boxes & air valves

DT swirl diffuser

Technical details

  • suitable for supply and exhaust air
  • high-performance, progressively twisted blade profile
  • perfect room flow
  • Nominal sizes ∅: 325 mm until 625 mm
  • Hygiene certificate


Hygiene certificate

Product details

DT Swirl Diffusers feature the well-proven, high-performance, progressively twisted blade profile. This facilitates high volume flow rates at low sound power levels. The radial, axially symmetrical design of the front plate ensures perfect room flow performance. The DT Swirl Diffuser is suitable for supply air and exhaust air with constant and variable volume flow rates. The symmetrical air distribution takes place via a square or circular front plate with visually attractive radial design. DT Swirl Diffusers cause a high induction effect with the room air directly at the diffuser. DT Swirl Diffusers are made of powder coated, galvanized sheet steel.

  • Nominal sizes: 325 mm until 625 mm 
  • Hole pattern: 325 mm until 600 mm

Technical specifications

Not all of the variant values listed here can be combined with each other. Use our Wildeboer configurator to easily check the possible combinations.

Front plate form
  • Quadr., circular hole pattern
  • Circular, circular hole pattern
Front plate size
  • 325 mm
  • 350 mm
  • 400 mm
  • 425 mm
  • 500 mm
  • 525 mm
  • 600 mm
  • 625 mm
Hole pattern size
  • 325 mm
  • 400 mm
  • 500 mm
  • 600 mm
Connection parts
  • Quadr. plenum box, 1 lat. connect. piece
  • Quadr. plenum box, 2 lat. connect. piece
  • Quadr. plenum box, 1 top connect. piece
  • Circular plenum box, 1 lat. connect. p.
  • Circular plenum box, 1 top connect. p.
Connecting piece dimensions
  • DN100
  • DN125
  • DN150
  • DN160
  • DN180
  • DN200
  • DN224
  • DN250
  • DN280
  • DN300
  • DN315
  • Without damper
  • With damper
Air deflector plate
  • Without air deflector plate
  • With air deflector plate
Colour Plenum box
  • Galvanized inside and outside
  • Galvanized inside, outside in colour RAL
  • Black inside & outside
Lip seal
  • Without lip seal
  • With lip seal
Air direction
  • Supply air (outflowing)
  • Exhaust air (inflowing)

Product pictures

Media & Downloads

User manual DT swirl diffuser (2019-02)
Hygiene certificate DT Swirl Diffuser (2022-11 / DE)
Quick selection swirl diffuser (2020-11 / DE)
Hygiene advices swirl diffuser (2010-09 / DE)