This low profile wind-poweredrotary roof ventilator for vans provides ventilation for vans, buses, ambulances, 4x4s, boats and buildings. Thisvan roof vent has been designed to protrude a maximum of 72mm above the vehicle's roof and low enough to fit under most roof mounted carrying racks, the 8 vaned air scoop rotates freely while the vehicle is in motion drawing out stale air.
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