Use
In Astron Pr/Polar roofs, on the peak and within the slope.

Function
Natural ventilation of air and fumes, from inside the buildings. Its circular shape utilizes the speed of the wind to improve air evacuation.
The peak is the ideal location for this ventilator, as the hot air accumulates at the highest peak of the building. Nevertheless, the ventilator can be placed at any point of the roof, which allows for local ventilation.

General Characteristics
Body and endcaps are made of ivory coloured coated steel.
Interior vanes are ivory coloured coated steel.
Bird screen, galvanised welded wire mesh.
galvanised opening mechanism and springs.
Steel operating cable, cable guides (instead of standard type pulleys), hook and cable stop.
Stainless steel screws and aluminium rivets.

Shape, Dimensions, Weight
Outside diameter: 800mm, eftective diameter: 500mm.
Weight: from 15 to 25 kg, according to the type of base configuration.