●Duct Fan 100mm Newest Duct Fan: With Switch, Connection Pipe Diameter: Φ100mm, Air Flow: 199 m3/h, Power Consumption: 16W, Rotation Speed: 2700 RPM, Noise Level: 40dB, Voltage: 100v-120v, Waterproof and Dustproof Level: IP44. Please note: ★ For normal daily ventilation, this duct fan is enough. We recommend the GF-150P duct fan with stronger airflow and suction power for BBQs and painting ●Low Noise & Energy Saving: The duct fan uses sealed pure copper bearing induction motor, which reduces the coefficient of friction compared to ordinary motors, saves energy, and provides more efficient ventilation. Ventilation fan blades are designed according to the principle of flow dynamics, which makes the airflow more smooth and reduce operating noise ●Large Air Flow & Overheating Protection: The duct fan is made of sturdy and lightweight aluminum alloy and ABS for excellent abrasion resistance, impact resistance, and durability. Equipped with a powerful induction motor and double ball bearings, the air flow can reach 199m³/h, providing a stable and powerful air flow. It also features a overheating protection device, which causes the contact point when the motor overheats, acts as a power outage protection and double protection ●Wide range of uses & easy to maintain: Suitable for places where ventilation is required, such as bathrooms, living rooms, kitchens, and warehouses. Perfect for camper ventilation, warehouse fan, underfloor air fan, vanity fan, dog kennel, cat toilet room exhaust fan. The duct fan has a unique buckle design, convenient to remove and remove, and can be used regularly to clean dust and grease and extend the service life of the product ●(Reliable 30 Days Return Free) We want customers to try Okryain duct fans with peace of mind, so we can return or refund within 30 days after purchase. We strive to ensure the quality of our products, but if you have a defective product or are not satisfied, please contact us via Amazon purchase history with your order number