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HJ-55 aluminium Z-edge rear
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HJ-55 aluminium Z-edge rear

Article number: WSA10012

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 type HJ (Horizontal Jalousie) ventilation louvre is used in technical areas such as emergency power generator (UPS), combined heat and power (CHP), machine rooms, boiler houses and compressor buildings, with special requirements for air flow, low air resistance and rain resistance.


  • vandal-proof
  • water-retaining
  • sand-resistant
  • low maintenance and one metallic unit for grounding

The JAZO ventilation louvre type HJ consists of a frame and single horizontal blades , with a leak 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.

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
0.50 95.20
1.30 92.70
2.00 87.80
2.80 84.60
sandblasting according to NEN-EN 13181: 2001, BSRIA
V in/out (m/s) rain
0.50 B
1.00 B
1.50 C
2.00 C
2.50 D
rain penetration classes according to NEN-EN 13030, BSRIA
Do you have any questions or would you like advice? 0316 - 59 29 11