|TOR Series Extraction Towers are especially suited to withdrawing large volumes of air at low pressures. The limited dimensions and weight help the assembly directly on the roofs, both with free suction and coupled to fl ues. The execution is carried out with special care in the selection of materials and the careful test make it lasting in time avoiding expensive maintenances. The galvanized steel manufacture and the fi bre-glass dome ensure the perfect defence against atmospheric agents. The electric motor and the fan, statically and dynamically equilibrated, ensure the maximum noiselessness. The range is divided into 9 models equipped with three-phase motor. Single-phase motors can be supplied on demand. The roof-top exhaust fan, in special execution on demand, can work continuously up to a temperature of 200°C.