| ■ Operation For air intake or exract with high and low air flow speeds or resistances. In all rooms without special fire protection requirements. ■ Advantages Installation without tools in seconds. High noise attenuation through built-in attenuator in centre pod. High quality anti static polymers suitable for temperatures up to +100 °C. Spring fit connector allows direct installation in ducting and wall with a minimum thickness of approx. 20 mm without additional mounting ring. ■ Specification Made from impact resistant white polymers and aero-dynamically shaped. Adjustable air flow via rotating centre pod (see diagrams). Contents Supplied as one valve. Accessory For installation in ducting, walls or thin panels a mounting ring may be required (see table). |