✔️️Dual ball bearings 4020 Blower Fan - High Speed version | ✔️High quality Dual ball bearings, More stable and Long life, suitable for continuous work. Use time can 24 hours / day. The life expectancy is about 60,000 hours. No maintenance required. But Lubricating oil can further reduce noise. | ✔️️Rated voltage: DC 12V | ✔️️Size: 40x40x20mm | ✔️️Made by WINSINN
✔️️Hydraulic Bearings 4010 Fan - High Speed version | ✔️High quality Hydraulic bearings, Better than Oil bearings, More stable and Long life, suitable for continuous work. The life expectancy is about 45,000 hours. | ✔️️Rated voltage: DC 12V | ✔️️Size: 40x40x10mm | ✔️Made by WINSINN.
✔️Dual ball bearings 4010 Fan - High Speed version | ✔️High quality Dual ball bearings, More stable and Long life, suitable for continuous work. Use time can 24 hours / day. The life expectancy is more than 60,000 hours. No maintenance required. But Lubricating oil can further reduce noise. | ✔️️Rated voltage: DC 24V | ✔️️Size: 40x40x10mm | ✔️️Made by WINSINN
✔️Hydraulic Bearings 5015 Blower Fan - High Speed version | ✔️High quality Hydraulic bearings, Better than Oil bearings, More stable and Long life, suitable for continuous work. The life expectancy is about 45,000 hours. | ✔️️Rated voltage: DC 12V | ✔️️Size: 50x50x15mm | ✔️️Made by WINSINN
✔️Dual ball bearings 5015 Blower Fan - High Speed version | ✔️High quality Dual ball bearings, More stable and Long life, suitable for continuous work. Use time can 24 hours / day. The life expectancy is about 60,000 hours. No maintenance required. But Lubricating oil can further reduce noise. | ✔️️Rated voltage: DC 24V | ✔️️Size: 50x50x15mm | ✔️️Made by WINSINN
✔️Bearing: Hydraulic Bearings, which keep the oil of bearings, better than sleeve bearings, life: 35,000 Hours. | ✔️Rated Voltage: DC 5V, Current: 0.25A, Power: 1.25W | ✔️Speed: 4500PRM, Air Pressure: 9.36mmH₂O, Airflow: 2.79CFM, Noise: 35dBA | ✔️Connector & Line length: USB – 39.37in(1000mm), Size: 50mm x 40mm x 15mm | ✔️Made by WINSINN. Warranty: 2-years for Hydraulic Bearings Fan.