General Features: Galvanized steel sheet structure; Impeller with aluminium hub and wing profile blades made of thermoplastic PPG resin; PST shock-resistant thermoplastic material protection dome; Steel safety grille; Eye bolts suitable for lifting the fan; Self-ventilated motor – Class F – IP55 – “LONG LIFE” ball bearings; For continuous operation in environments with air temperature range -25°C ÷ +50°C; 2 speed motor models can be controlled by a three-phase polarity switch, not supplied as an accessory but easy to find on sale.
Accessories: Phase slicing speed regulator for monophase
motors; Backdraught gravity shutter; Safety switch supplied as an accessory but
already built on the fan motor as standard.