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HJ-55 steel / stainless steel
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HJ-55 steel / stainless steel

Article number: 1009

The type HJ (Horizontal Jalousie) ventilation louvre is used in technical rooms, such as emergency power generator (UPS) rooms, combined heat and power (CHP) rooms, machine rooms, boiler houses and compressor buildings, with special requirements for air flow, low air resistance and rain resistance. Available with class 2 burglar resistance certification according to NEN-5096 and EN-1627, this louvre retains its properties:

  • vandal-proof
  • water-retaining
  • burglar-resistant WK2 RC2
  • low maintenance and one metallic unit for grounding

The JAZO ventilation louvre type HJ consists of a frame and single horizontal blades , with a bottom sill. Each blade is welded to the front and / or rear in the frame, creating a metallic whole that meets the requirements for the grounding of technical areas. There are various types of framing profiles and frame with a variety of mounting options. This makes it possible to assemble in every architectural detail.

EFD simulation

EFD simulation

Pressure loss

Pressure loss
Features Wert
Pitch 59.5 [mm]
Build-in depth 66.5 [mm]
Drag coefficient in 6.71
Drag coefficient out 7.52
Nettflow 55 [%]
pressure loss according to EFD.Pro
V in/out (m/s) effectiveness (%)
0,00 96,80
0.00 96.80
0,50 95,20
0.50 95.20
1,30 92,70
1.30 92.70
2,00 87,80
2.00 87.80
2,80 84,60
2.80 84.60
sandblasting according to NEN-EN 13181: 2001, BSRIA
V in/out (m/s) rain
0,50 B
0.50 B
1,00 B
1.00 B
1,50 C
1.50 C
2,00 C
2.00 C
2,50 D
2.50 D
rain penetration classes according to NEN-EN 13030, BSRIA
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