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HS-27 aluminium
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HS-27 aluminium

Article number: 1000

The aluminium safety ventilation louvres type HS (High Safety) are specially designed for the natural ventilation of transformer rooms and gas rooms.


  • 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 JAZO ventilation louvre type HS consists of a frame and single horizontal blades, with a leak sill. Each blade is welded to the front and / or rear in the , creating a metallic whole that meets the requirements for the grounding of technical areas. One earth-litze is sufficient.

There are various types of framing profiles and frames for a variety of mounting options. This makes it possible to assemble in every architectural detail.

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 93,00
0,50 80,00
1,30 52,00
2,00 35,00
2,80 21,00
sandblasting according to NEN-EN 13181: 2001, BSRIA
V in/out (m/s) rain
0,50 A
1,00 B
1,50 D
2,00 D
2,50 D
rain penetration classes according to NEN-EN 13030, BSRIA
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