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Product information
VELUX 121
Smoke Ventilation System
GGL/GGU ----40 – Smoke Ventilation System
Characteristics:
• Can be installed and used for venting of smoke in roof pitches
15°-90°
• Optimised geometric and aerodynamic venting area
• System comprises centre-pivot roof window GGL with pre-
installed motor with flashing or kerb for flat roof installation,
control unit, break glass point and smoke detector
• The control unit can control up to 2 smoke ventilation windows
• Certied according to EN 12101-2
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