Roof Top Spinning Vent

These draw the air OUT! As the vent spins by the slightest breeze it removes the hot air. Perfect for any Van, Bus, Caravan, Truck, Trailer or Float. High quality rotary vent, Plastic, 230mm diameter, 130m high All plastic construction, white, with ball bearings. Protrudes 110mm above roof. To Install Remove the top cap and undo the spindle nut. The entire rotating section will remove and leave the base plate exposed. The base plate is screwed or rivetted thru the 4 holes provided, and silicone or caulking compound should be added to the surface to prevent water leaks. An optional internal cut-off vent may be added if required.