Powerful and efficient performance, high speed silent energy saving        Powerful and efficient performance, high speed silent energy saving        High quality fan blades are durable and powerful over plastic fan blades.        Lightweight and practical, the operation is as smooth as any fan we encounter        Long service life with special fully enclosed drum motor        Environmentally friendly and non-polluting, it is perfect for planting room ventilation or in combination with carbon filters to control odour.        Two-way stable design, long-term work is not afraid of shock.        High-quality patch stamping, fixed and not afraid of vibration.              Voltage: 220V 50Hz        Input power: 25W        Speed: 2800R / Min        Air volume: 140m3/H        Running noise: 30-35db        size: Diameter: 100 mm        Height: 80 mm        Colour: white/Black        Material: metal        Package Contents:        1 * Duct Booster Vent Fan        Only the above package content, other products are not included.        Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.