Features: 1. The fan blade is made of integrated punch, which can effectively reduce noise. -Correct dynamic balance, have good balance accuracy, good air efficiency, high efficiency, stable and reliable operation, large air volume. 2. The wire is made of copper wire, with strong conductive wire, high cost performance, more durable and reliable. 3. Used for ventilation or heat dissipation in kitchen, living room, supermarket, hotel and other places. Specification: Rated Voltage: 220V Input Power: 40W Speed: 2800r/min Air Volume: 500m³/h Noise: 40db Package Included: 1x Exhaust Fan .