Description: Powerful and efficient performance, high speed silent energy saving.High quality fan blades are and powerful over plastic fan blades. 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: 40W Speed: 2800R / Min Air volume: 140m3/H Running noise: 30-35db size: 150 x 150mm Material: Metal colour: Black Package Contents: 1 x Exhaust Fans Only the above package content, other products are not included. Note: Light reflection 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.