• Outer wall mounting.
  • Decoration of ventilation shaft vents or for connection to rectangular or round air ducts.
  • Modification may include a gravity backdraft damper for backflow prevention.
  • Protection of grills against birds and rodents.
  • Temperature and UV resistant antistatic plastic.
  • Flush mounting is possible.
  • Flush mounted fasteners.
  • Easy maintenance.
  • Size from 154 to 186mm