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Keep your grow room or grow tent well ventilated with the Vtronic Mixed Flow Inline Duct Fan. This inline duct fan features a high-speed external rotor motor, pressurized fluid power blades, temperature control, large airflow and an IP44 protection level. On the basis of traditional fans, VTRONICS duct fans have undergone deep technological innovation; NMB bearing imported from Japan, pressurized hydrodynamic fan blade; on the basis of maintaining the traditional large air volume, the noise is greatly reduced, easy to install, more flexible and convenient; the fuselage adopts flame-retardant shell, which greatly improves the safety factor and is now widely used in high-end hotels, high-end office buildings, all kinds of high-end restaurants and other indoor places -  https://bit.ly/3umRrl5.