Certiciel Twin Flap Ventilator (Glazed)

NSHEV dedicated to smoke ventilation and day to day ventilation on roof. Mechanism completely concealed in the profile (not visible when units close)


. Concealed mechanism.

. Forecast for installation on standard or glazed roof.

. Can be glazed, opaque or with acoustic/ thermal insulation.

. All finishes available: laquered, anodised, mill.

. NSHEV (Natural Smoke and Heat Exhaust Ventilator) consists on two leaves.

. It replaces two panes of glass on the glass structure.

. It can also be delivered installed on upstand for a typical dry roof.

. Three versions available:
– Glazed on atrium.
– Installation on upstand with glass or thermal alu infill.
– Acoustic with or without upstand.


NSHEV combining smoke ventilation and lighting – Daily ventilation can also be provided (depends on the type of control).


• Certiciel is a NSHEV (Natural Smoke and Heat Exhaust Ventilator) conforms to NF EN 12101-2 and NFS 61 937-1.


. Opening frame with thermal bridge.

. Adaptation to match the existing alu profile thickness can be done.

. Adaptation on upstand.