• Ventilation

    Ventilation is essential for the health of residents. But the service life of a building can also be considerably shortened if there is insufficient ventilation.

  • Building

    When building a home, there are many aspects that we take into account. Below you will find our building solutions.

Air Excellent DBOX External Air Restrictor Valve

Article number: 188663

Air Excellent DBOX External Air Restrictor Valve

Article number: 188663

An Air Excellent distribution box accessory used to set the flow rate in a duct.

  • Low system pressure loss due to radial design
  • Airtightness class D/ATC 2 up +/- 2000 Pa, which minimises fan energy use and sound production
  • Modular manifolds, which can be used with all duct types
  • Semi-rigid ducts on a roll and airtight mechanical connections, which are extremely easy to install
  • TÜV SÜD and ISEGA tested and certified, REACH compliant


Article number188663
GTIN / EAN8713645221687
Price8.79 GBP
Valid from01/06/2021
Trade nameAir Excellent


Height120 mm
Length gross103 mm
Length nett (working length)53 mm
Net weight0.09 kg
Width99.5 mm


Airflow directionSupply / extract
Anti staticyes
Diameter77 mm
Insert length side 1 32 mm
Insert length side 2 35 mm


Gross weight0.09 kg
Number per packaging1
Packaging / Trade height120 mm
Packaging / Trade length103 mm
Packaging / Trade width99.5 mm
Packaging of unitUnpacked