The Gamma Supply Ultra Series of mixed-flow roof units have been designed for use in free outlet and ducted installations. These compact and low profile units are ideal for supplying fresh air to an air handling unit or to an air conditioning system in commercial buildings.

They are available in 3 sizes extending from 450 to 560mm diameter

• Robust, lightweight construction.
• Choice of speeds available.
• Ideal for ducted installations.
• High performance mixed-flow impellers fitted.
• Can be mounted at angles up to 30°.
• Most 3-phase motors are 2-speed star/delta design as
• standard.
• Speed-controllable using electronic or auto-transformer controllers.

• Robust, lightweight construction.
• Choice of speeds available.
• Ideal for ducted installations.
• High performance mixed-flow impellers fitted.
• Can be mounted at angles up to 30°.
• Most 3-phase motors are 2-speed star/delta design as
• standard.
• Speed-controllable using electronic or auto-transformer controllers.

The roof ventilators shall be of the Gamma Supply Ultra Series supply air type as designed and manufactured by Fantech Pty Ltd.

Impellers shall be made from high performance injection moulded composite material. They shall be mixed-flow design and driven by speed-controllable external rotor motors with integral thermal overload protection.

The cowls shall be manufactured from UV-stabilised plastic. Steel components to be corrosion protected.

All performance data shall be for a complete assembled unit based on ISO5801 for air flow and ISO 13347-3 for noise