The Twin Gamma Ultra EC Series of Mixed-Flow roof fans have been designed for use in commercial ducted exhaust applications. Incorporating twin vertical discharge fans, the unit provides 100% stand-by capacity.

These compact and low profile units are fitted with bird-mesh to prevent the entry of birds and vermin into the ducting or building.

• EC motor features reverse polarity protection, locked rotor protection and soft start.
• No additional protection such as contactors are required.
• All models supplied standard with 0-10V control input.
• Can be run as an independent ventilation source or integrated into most building management systems.
• Can be mounted at angles up to 30°.
• Backdraft-shutters are an optional extra (See special note).

Note: Pressure loss across the shutter is now included in the performance curves.