VENTRA RA is a combination of the multi louvred ventilator type VENTRA with a hinging base adaptor for roof access.  This solution meets the need for a EN12101-2 certified natural smoke exhaust ventilator that is also suitable as a roof entry hatch. The base adaptor is formed from high quality corrosion resistant aluminium and is available with single wall or double wall insulated base. Sideways opening can be either manual with gas springs or with electric motors.
The VENTRA as opening lid is available with various louvre – and base options and has standard a 24Vdc motor for daily ventilation and smoke exhaust.

To be installed on the roof, standard provided with a S5 flange type for fixing onto an upstand. Other flange options possible on request.

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

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

Roof opening width: 900 – 1800 mm
Roof opening length: 966 – 2506 (11 Louvres, max)

Note: some configurations need to be evaluated due to louvres’ materials. Please consult our technical department.

Ventra individual adjustable from 0° up to 90°
Acess roof hatch opening up to 90°

Operation VENTRA for day to day ventilation and smoke exhaust ventilation 24 Vdc electric, in accordance with EN 12101-02.
Opening sideways for roof access manually with gas springs and handle with internal lock or 24 Vdc electric.

Single wall or double wall aluminium with insulation

* Custom flange design and insulated flanges upon request

Depends on dimensions and type of infill

Polyester powder coating