Intended use

Self-opening/closing shutters for air extraction from the potentially explosive atmospheres of zones 1, 2 and 21, 22. These also serve as weather protection and cold air barriers. With enclosed galvanized protective grille.

From size 65 with central bar to increase shutter stability.

Operation is only permitted with:

• a permanent installation, mounted on a wall with sufficient load-bearing capacity.
• installation using suitable mounting material.
• a vertical installation position.
• installation using protective grille with free air inlet or outlet for a fan.