Article number: WSA10026

Assembly service

Our craftsmen assemble the products on site so that you are assured of a perfect end result.

Before we start assembling, we first come to the construction site to view the situation and measure everything again.

In the shopping cart you can indicate that you want to use the assembly service.

The aluminum safety ventilation grilles 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
  • puncture-proof
  • Flame-extinguishing
  • mouse-tight
  • maintenance free
  • one metallic unit for earthing
  • vandal resistant and condensation resistant

This optimally protects people, animals, equipment and machines.

The JAZO ventilation grille type HS consists of a frame (frame) and single horizontal blades (slats), with a leakage sill. Each blade is welded at the rear, creating a single metallic whole that meets the requirements for earthing technical areas. One earth wire is sufficient.

Features Wert
Pitch 36 [mm]
Build-in depth var [mm]
Drag coefficient in 62.6
Drag coefficient out 83.6
Nettflow 27.7 [%]
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 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 B
1.00 B
1,50 D
1.50 D
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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