• Cabinet fabricated from extruded aluminium angle sections (UNI 9006) and 48 mm gauge zinc-coated sheet metal panels, with mineral wool sound insulation (density 90/100 kg/m3). • 3 speeds single phase AC motor, coupled to a forward-bladed double inlet centrifugal impeller. • 1 x inspection panel with key-lockable handle. • 1 x inlet panel with smooth circular spigot. • 1 x outlet panel with smooth circular spigot. • Vortice speed controller