EFF Air Valves

Air extraction diffuser for easy ceiling or wall installation

Lockable Central Cone
Direct Duct Installation
Adjustable Pressure
Discreet Design

Exhaust and Supply

The EFF is an exhaust diffuser for ceiling or wall installation. It can also be used for air supply.

Lockable Central Cone

The EFF diffuser has a lockable central cone which is rotated to adjust the pressure and the air volume.

Sheet Metal Manufacture

The EFF diffuser is manufactured from sheet steel with a white powder-coated finish.

Available in different sizes, the EFF is an air extraction diffuser that allows for easy installation on a ceiling or wall. It also allows for air supply. The diffuser has a lockable central cone which can be rotated to adjust the pressure and also the air volume. All sizes allow for easy installation directly onto the duct. The pressure is adjusted by rotating the valve cone.

The EFF has a discreet, aesthetic design that allows for installation in a range of locations. It is manufactured from sheet steel with a white powder-coated finish and is available in the following diameters: ø 80, ø 100, ø 125, ø 160 and ø 200. The ø 160 (EFF 160a) size is suitable for both 150 and 160-diameter ducts.