Aug 26, 2020 · A cowl is a hood-shaped covering of a chimney stack or ventilation discharge. These are used at the end of ducting systems when air is discharged to the outside. You will need to use a cowl if your ducting system exits the building via the ceiling or a wall.

Apr 24, 2023 · Cowl vents are commonly found on cars, trucks, tractors, buses and other vehicles. Also known as dorade boxes, they are designed to facilitate airflow. You can find cowl vents in different sizes and styles, but they all allow air to enter or leave a space.

Roof cowls are designed to provide a weatherproof opening in ducted systems to the outside of buildings. MAD cowls are available in various sizes and capacities to suit smaller-diameter ducting in either supply or exhaust air configuration. The MAD cowl range is manufactured from galvanised sheet steel and spun aluminium.

How does a jet cowl work? Working on a job with a number of kitchen extract fans, we are installing jet cowls to expel the exhaust at high velocity. I'm wondering why there is the diverging section to converging and how exactly this works when the end of the jet cowl has the same area as the duct? Why isn't there just a converging section?

SuperAir Aluminium roof mushroom cowl is specifically designed to protect HVAC duct systems with efficient air circulation while also keeping debris, rain and birds from gaining access to the ducts.

used universally for air intake and discharge in HVAC systems. Its main uses are: Exhaust air discharge Fresh air intake Natural ventilation (e.g. underground car parks, hot working areas) Ventilation of lift shafts Combined covers for multiple small HVAC systems, with sepa-rate intake and exhaust. Special paint available on request Roof vent ...

Proper installation of a roof vent cowl keeps smoke out and prevents backflow. FAMCO has many vent cowls available.

Designed to provide a weatherproof opening in ducted systems to the outside of buildings, the VCQ roof cowl series is a simple and robust solution. Combined with in-line fans or ceiling-mounted fans, roof cowls sit on a roof and allow air to be drawn in or exhausted from a building.

SuperAir Fan Cowl ensures optimal airflow and protection for industrial and HVAC fans. Made of durable materials, it reduces the sound, protects against corrosion, and allows for easy installation in both outdoor and indoor applications.

The SuperAir Steel Rotary Chimney Cowl, RCC Rotating hood for ventilation pipes, smoke stacks, and air extraction. Made of Steel, very light, and resistant to the elements. Installs quickly and easily to the extraction pipe.