Backdraft Shutters Type AS

AS type units are air stream-operated shutters that are designed for surface mounting. Approximately 10Pa pressure is only required to fully open the blades. These shutters are weather-resistant, making them suitable for both internal and external applications.

• Moulded in impact-resistant UV-stabilised plastic.
• All AS units have a galvanised wire mesh guard fitted.
• Units are screw fixing and suitable for mounting on vertical surfaces and generally used for exhaust applications.
• Finished in a Traffic White frame and grey flaps.

Testing

Air flow tests based on ISO5801:2007

Selection Table

The above are only typical selections, as the shutters may be used with other fan types or over openings having dimensions that generally conform to dimension C in the dimensions table.

Suggested Specifications

The air-operated shutters shall be of AS series as supplied by Fantech.

They shall be of low resistance design and have a pressure drop of approximately 10Pa.

Grilles shall be tested to ISO5801:2007