One way transfer unit Powerful 170mm in-line exhaust fan Ultra low energy use - only 40 watts Engineered to seal when not in use - prevents back draughts Ideal for eco sensitive designs and 5 star energy rated homes Extraction rate of 55 litres per second* Pack includes: 6m x 150mm flexible duct (insulated) 2 x interior grille 1 x wall mounted thermostat (heating/cooling) 1 x in-line exhaust unit 2 year replacement warranty Australian made Supply (Volts) : 240 Cut out fan size (mm) : 200 dia. Minimum clearance above unit (mm) : 230/15 above unit Watts rating (Amps) : 0.3 Watts per hour : 40 Cost (cents) : 0.52 Features : 5 star energy application