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Airtight Louvre Damper Type LD-J

Louver damper, type LD-J and type ND-J, will be used for controlling air flow and shutting off air ducts.


  • The damper is designed to operate without any failure at an operating pressure of 1.1 times the admissible operating pressure.
  • Design:
    • Housing stainless steel or galvanized steel, 1.5 mm thick, by means of a screwed construction
    • Warp-resistant hollow body lamella’s made of aluminum, 150 mm, decontamination painting as option
    • Lamella’s equipped with changeable silicon rubber profile
    • Counter rotating lamella’s by means of outside positioned rod. Rod made of stainless steel
    • Electrical-, pneumatic-, and manual actuator available.
    • Maintenance-free operation


Max. temperature:


Adm. leakage rate damper housing:

class C acc. to DIN EN 1751

Adm. leakage rate damper blades (lamellas):

class 4 acc. to DIN EN 1751


Stainless steel or galvanised steel, 1.5 mm, by means of a screwed construction


manual, electrical, or pneumatic

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