JET Alu-Dunkelklappe WD-40


The darkening flaap for flat roofs

The JET-ALU-DARKENING FLAPS-WD-40 are ideally suited for efficient smoke exhaust in the event of fire. They are utilised in instances where daylight is not needed. The aluminium flap in a sandwich construction method is thermally separated by the stable ventilation frame made from unplasticised PVC and insulated with 40 mm mineral wool. It is therefore completely energy efficient.

The darkening flaps can be utilised in new buildings and refurbishment projects and can be adapted to individual requirements using the extensive JET accessories. An optical adaptation to your project is also trouble free due to the surface area in RAL colour.

The JET-ALU-DARKENING FLAPS-WD-40 are also suitable for daily ventilation. The actuation can be executed either manually, electrically or pneumatically as desired.

  • Aluminium darkening flap with 40mm mineral wool insulation
  • Surface area: Aluminium natural (colour according to RAL on request as option)
  • Fixed or ventable
  • Ventilation possibilities: manual, electric, pneumatic
  • Can be utilised as SHEV system with the various FIREJET® opener devices - tested according to EN 12101-2
  • Can be utilised as a staircase SHEV device according to LBO with various 24V electric drive units and SHEV central units
  • Deliverable in nominal dimensions 60 x 60 up to 200 x 200 cm / 200 x 300 cm
  • Un LD Value: Aluminium darkening flap: 0.85 W/m2K according to EN 673 / DIN 4108-4
  • Light transmission TL: Aluminium darkening flap: 0 %
  • Sound insulation: 34 dB
  • Aluminium darkening flap (aluminium / A1 mineral wool / aluminium) (components are predominantly non-combustible)
  • Industrial buildings
  • Commercial buildings

Accessories for JET-ALU-DARKENING FLAP-WD-40 Light Domes


Fall-Through Protection Systems

SHEV and Ventilation