All-weather version of the VENTRA where we used the concept from MEGADELTA and added the lateral flaps to provide ventilation even in bad weather

Product Features

It’s equipped with lateral inner flaps to enable weather that can be opened/closed pneumatically or electrically. At the top it’s equipped with a louvres that open and close providing an economic method of ventilation, allowing the removal of large quantities of warm air and/or smoke from a building within a short period of time. The lateral flaps are closed by a spring mechanism and the changeover from fair-weather ventilation to weather-protected is controlled by a rain-sensor system. 

MEGAVENTRA also serves as natural smoke and heat exhaust ventilator. Can be applied to various type of roof (flat roofs, northlights roofs and others) in suitable for a wide range of applications. The vents are manufactured according to ISO 9001 quality control standards and comply with the European requirements for NSHE according to EN 12101-2. MEGAVENTRA are formed from high quality corrosion resistant aluminium to ensure low maintenance requirements and water tightness. 

Various method of operation using pneumatic or electric actuator are available. Available on large dimensions. Up to 2000 x 3166 mm (width x length). 

Tempered Alumininum


Opening 140º,150º & 160º



RAL 9005

Tempered Glass



Typical Applications

May be installed either onto roofs or into barrel vault daylighting systems. Particularly suitable for warehouses, logistics centres, production environments and industries. 


Tempered aluminium, sea water and corrosion resistant (EN AW 5754).
Corrosion resistant bearings. 
Built-in weather resistant hydrophobic tape. 

Note: aluminum is supplied untreated as standard. Possibility of being supplied with electrostatic painting (in any RAL color). 


Roof opening width: 1000 – 2000 mm. 
Roof opening length: 1000 – 3000 mm. 

Opening Angle

Open angle from to 90º

Controls Fire Ventilation

P1F: single pipe compressed air operation with fire function.
P2F: double pipe compressed air operation with fire function.
M24V: electric motor.

Controls Natural Ventilation

P1: Compressed air opening and spring closing.
M24V:  electric motor.
M230V: electric motor.


Single aluminium. 
Double wall aluminium with insulation. 


AL – Single Aluminium
AL ISO – Double insulated aluminium 
PC16 – Polycarbonate 16mm, clear or opal
PC25 – Polycarbonate 25mm clear or opal


Depends on dimensions and type of infill


The system has been tested and certified in accordance with EN 12101-2


Custom Dimensions;
Powder coated design (any RAL color);
Bird or insect mesh.