Roof Exhaust Ventilator Fan removes smoke, heat, gas, and humidity from covered area. Airier Natura Pvt. Ltd. Is an ISO 9001-2000 awarded company that manufactures Roof Exhaust Ventilator Fan. Airier Natura Pvt. Ltd. Also manufactures a wide range of ventilators. Roof Exhaust Ventilator Fan requires no electricity. The Fan increases the life of roof sheet, structure, machinery efficiency. This Fan is suitable for all roofs. It comes with easy Adjustable feature for any angle and direction.