Weiss 1 to 3 Room Heat Transfer System 150mm SKU: 276860 MODEL: FV663 Error. try again later You've successfully joined the club $ 649 each or 4 interest free payments of $162.25 with More info × Mitre 10 MAvailable at Mitre 10 MEGA stores. Variants 1 room to 3 room system. Effectively and quietly moves excess heat to three other rooms in your home. Includes thermostat, inline motor, inlet vent, outlet diffusers and insulated ducting. Features and benefits Powerful and effective booster fan. Digital thermostatic control. Adjustable outlet vents.