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Overspressure shutters with gravity closing blades. Designed to protect various ventillation or fan exhaust oprenings.
Application: these are used to keep an over- or underpressure difference between two rooms or between the internal and external enviroment.
Mounting: is mounted on the outside on the outer wall of the building, usually where they are mounted axial fans and duct wall provided with ventilation exhaust fan.
Fixing: standard with visible screw (the same colour as trasfer grille).
Material: aluminum. Finish: is aluminium-grey AL90ö6, another RAL color or aluminium finish as optionally.
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