Range of centrifugal roof mounted fans in vertical discharge format, designed for smoke extraction in fire conditions n nSuitable for air stream temperature up to 120ºC. n- Base manufactured from galvanised sheet steel. n- High efficiency centrifugal backward curved impeller manufactured from galvanized sheet steel. n- Cowl manufactured from spun aluminium. nAll models incorporate bird-proof guard. n- Available, depending on the model, in 4, 6 or 4/8 poles.