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VS-27 aluminium
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VS-27 aluminium

Article number: 1021

The safety ventilation louvre type VS (Vertical Safety), a vertically placed HS louvre, 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. The types of VS louvres are 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 36 [mm]
Build-in depth 25 [mm]
Drag coefficient in 97.6
Drag coefficient out 110.7
Nettflow 27 [%]
pressure loss according to EFD.Pro
V in/out (m/s) effectiveness (%)
0,00 99,00
0.00 99.00
0,50 94,00
0.50 94.00
1,30 73,00
1.30 73.00
2,00 41,00
2.00 41.00
2,80 21,00
2.80 21.00
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 A
1.50 A
2,00 D
2.00 D
2,50 D
2.50 D
rain penetration classes according to NEN-EN 13030, BSRIA
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