Description
The blades close when there is no pressure pushing from behind, preventing backflow. As soon as the pressure increases the louvres open to release exhaust fumes, allowing for fresh air intake or any surplus pressure. These are most commonly used for large extraction fans or pressurized rooms.
Sunline Diffuser
Silhouette Diffuser
Baby Linear Diffuser
Swirl (CVD & CCVD) Diffuser
Poly Diffuser (Fixed & Adjustable)
Constant Volume Diffuser (CVD & CCVD)
Swivel Jet Diffuser 




