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VS-41 aluminium
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VS-41 aluminium

Article number: 1027

The safety ventilation louvre type VS-41 (Vertical Safety), is suitable for the natural ventilation of transformer rooms and other technical areas. The louvre has the additional advantage that the water resistance is even better. This type of VS louvre is very suitable for placement in an inclined roof surface.


  • rainproof
  • (dust) snow and dust resistant
  • sand-resistant
  • safe-proof
  • flame-extinguishing
  • mouse-tight
  • maintenance-free
  • one metallic whole for grounding
  • vandal-proof and condensate-draining

    As a result, people, animals, equipment and machines are optimally protected.

The various components of the JAZO air vents are combined and completely welded. As a result, a metallic whole is created, as a result of which requirements with respect to grounding can be met in a simple manner. One earth-litze is sufficient. There is a choice of various types of framing profiles. Mounting the ventilation louvre is possible in every architectural detail.

EFD simulation

EFD simulation

Pressure loss

Pressure loss
Features Wert
Pitch 78 [mm]
Build-in depth 75.5 [mm]
Drag coefficient in 45.99
Drag coefficient out 43.74
Nettflow 41 [%]
pressure loss according to EFD.Pro
V in/out (m/s) effectiveness (%)
0,00 94,00
0.00 94.00
0,50 84,00
0.50 84.00
1,30 72,00
1.30 72.00
2,00 43,00
2.00 43.00
2,80 18,00
2.80 18.00
sandblasting according to NEN-EN 13181: 2001, BSRIA
V in/out (m/s) rain
0,50 A
0.50 A
1,00 A
1.00 A
1,50 B
1.50 B
2,00 B
2.00 B
rain penetration classes according to NEN-EN 13030, BSRIA
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