Innovative solution for a flat roof where smoke ventilation is required. Available for 0.88m² (100x100cm) or 1.3m² (120x120cm) of smoke-fee ventilation area. Double glazed window. **PROTECTIVE POLYCARBONATE DOME IS REQUIRED AND SHOULD BE ORDERED SEPARATELY** Smoke sensors, control systems and break glass units to be purchased separately. A control unit is required even if the window is to be triggered by a fire alarm system. Completed installation is AA fire rated. Tested & certified to EN ISO 12101-2.