• Cabinet, filter cover and grille made of wood finished both inside and outside with two-part naturally hardening polyurethane paint, colour black. • 3 speed start capacitor motor with thermal overload protection and double extension shaft turning in self-lubricating bushings, coupled to 2 impellers made of thermoplastic material; vibration eliminated by rubber dampers located between motor and mounting. • Aluminium mesh prefilter. • Electrostatic filter, electronically controlled. • Granular activated carbon filter. • Ionizing electrodes selectable by way of dedicated switch. • On/off switch. • Fan speed controlled by 3-position rotary switch. • Electromechanical 24h timer with option of manual or automatic operation. • 4 caster wheels. • Power cord with moulded plug. • IMQ safety certification.