Smoke ventilation roof windows (EN121012:2003) are electronically operated and activated by a smoke sensor built into the control unit. A signal from the sensor triggers automatic operation of the motor, while the window sash protects the roof opening against the effects of a strong lateral wind. The most commonly used smoke ventilation roof windows are of centre pivot operation with laminated glazing. The window comes with 1 x RZN 4503-T Control unit, 12v 302amp battery back up pack, RT45 break glass alarm and SD-0-371 smoke detector. 

• Automatically and electrically operated 

Please note, you must inform us whether you have a tile or slate roof. 

Please note, the size 780 x 1400mm comes complete as 2 windows.