The Dunn and Watson Aluminium Air Pressure Vent is useful for keeping positive pressure in your 4wd ute canopy when you’re on the road. If your vehicle is filling up with dust, this vent will help to keep your gear clean by taking clean air in from the roof instead. The design of this vent allows for air to be drawn in, while also channelling water out of the back to keep the inside dry. This vent is Australian made from aluminium, so it is corrosion resistant and will last in any weather conditions. It also comes with a foam filter to help stop dust that may be drawn in with the air.