MiniMax (ZR)

Thermally insulated, sound attenuating acoustic ventilator, specifically designed for “visually unobtrusive” compact overhead mounting behind the cavity wall. The MiniMax (ZR) offers significantly better sound-damping values when compared to standard ventilators, making it ideally suited for situations associated with low sound exposure levels. The inside of the ventilator allows to combine the MiniMax (ZR) with the DucoMax (ZR) sound absorbing ventilators in projects with noise-exposed façades and light noise exposed façades. In addition, the building-in details of DucoMax (ZR) and MiniMax (ZR) are identical, that is, one single design detailling applicable to noise-exposed, light noise exposed and unexposed façades. The (optional) self regulating ventilation flap provides a significant net energy gain. The removable inner grille performs as insect screen and is easy to clean.


  • Specifically designed for “unobtrusive” compact overhead mounting
  • Very fast delivery enabled by vertically integrated Just-In-Time Manufacturing
  • Red/green status indication (closed/open position)
  • Handle, cord and rod control
  • Easy to remove inner grille performing as insect screening.
  • Quite suitable for aluminium, timber and PVCu window frames.
  • “Injection moulded” rather than “flat” end caps = quick to install and excellent stability
  • Use of unique internal couplers giving exceptionally high strength and rigidity.
  • MiniMax is no longer resin coated = short delivery times
  • Thermoplastic components are available in white or in black
  • Unique thermal break by the “Slide & Fix” system
  • “Active closing” allows for superb wind and water tightness.
  • High air throughput and superior damping values
  • Self-regulating flap (available as an option) results in an energy gain
  • Combines perfectly with the DucoMax overhead ventilators.
  • Ideally suited for situations associated with low sound exposure
  • 10 year Duco warranty