For maximum safety in preventive fire protection
The aluminium darkening flap WD-80 can be ideally used to efficiently dissipate toxic smoke fumes in case of fire, especially in buildings where daylight is not necessary or not desired, such as in cinemas.
They are made up of aluminium flaps in a sandwich construction method. These are thermally separated by the sturdy fan framework made of rigid PVC and insulated with 80mm mineral wool. This also makes them particularly energy-efficient.
Irrespective of whether in new buildings or for use in refurbishment projects, the darkening flaps can always be adapted and customised to the given requirements through comprehensive VELUX Commercial accessories. The optional coating of the surface area in RAL colours also contributes to this.
The aluminium darkening flap WD-80 is also suitable for aeration and ventilation. This can be executed either electrically, pneumatically or manually.