We are Shenzhen HengLiXing Electronic Co., Ltd based in Shenzhen , China. We are member of Tradekey.com since April, 2010. Our business is related to Electrical & Electronics Supplies industry and we specifically deal in Cooling Fan, CPU Cooler, DC Fan, AC Fan. Please find our product details below: 40*40*10 Dual ball DC Fan DC Fan Ball or sleeve bearing . Voltage is 5V or 12V. And the speed is 4200~6000RPM. Noise is from 21.13 to 26.26dBA. Speed, three levels, low speed, middle speed and high speed. About 16 kinds of fans on this model. Dual Ball Exhaust Fan (50*50*10mm) Size: 50*50*10mm Bearing: Sleeve/Ball Bearing Voltage: 12V Current: 0.16A Power: 1.9W Speed: 5300RPM Air Flow: 11.06CFM Air Pressure: 2.67mmH2O Noise: 30.15dB(A) Weight: 20g Frame and Impeller: Thermel Plastic, UL 94V-0 Lead Wires: UL Type ( + ) : Red ( - ) : Black Operation Temperature: -10oC~70oC(+14 ~+167 degree F) 35%~ 85%RH Storage Temperature: -40oC~80oC 35% ~85%RH Up to 50000hrs life expectancy(Ball Bearing) Special Funtion: Temp Control; Auto Start; Alarm; LED; PWM Control Anti-corrosive and moisture proof structure, reinforced plastic or customize design. Our DC/AC Fan are available at high performance range, contact us for more details. Bearing: Sleeve/Ball Bearing Voltage: 12V Current: 0.16A Power: 1.9W Speed: 5300RPM Air Flow: 11.06CFM Air Pressure: 2.67mmH2O Noise: 30.15dB(A) Weight: 20g Frame and Impeller: Thermel Plastic, UL 94V-0 Lead Wires: UL Type ( + ) : Red ( - ) : Black Operation Temperature: -10oC~70oC(+14 ~+167 degree F) 35%~ 85%RH Storage Temperature: -40oC~80oC 35% ~85%RH Up to 50000hrs life expectancy(Ball Bearing) Special Funtion: Temp Control; Auto Start; Alarm; LED; PWM Control Anti-corrosive and moisture proof structure, reinforced plastic or customize design. Our DC/AC Fan are available at high performance range, contact us for more details. 40*40*10 Dual ball DC Fan DC Fan Ball or sleeve bearing . Voltage is 5V or 12V. And the speed is 4200~6000RPM. Noise is from 21.13 to 26.26dBA. Speed, three levels, low speed, middle speed and high speed. About 16 kinds of fans on this model. Dual Ball Exhaust Fan (50*50*10mm) Size: 50*50*10mm Bearing: Sleeve/Ball Bearing Voltage: 12V Current: 0.16A Power: 1.9W Speed: 5300RPM Air Flow: 11.06CFM Air Pressure: 2.67mmH2O Noise: 30.15dB(A) Weight: 20g Frame and Impeller: Thermel Plastic, UL 94V-0 Lead Wires: UL Type ( + ) : Red ( - ) : Black Operation Temperature: -10oC~70oC(+14 ~+167 degree F) 35%~ 85%RH Storage Temperature: -40oC~80oC 35% ~85%RH Up to 50000hrs life expectancy(Ball Bearing) Special Funtion: Temp Control; Auto Start; Alarm; LED; PWM Control Anti-corrosive and moisture proof structure, reinforced plastic or customize design. Our DC/AC Fan are available at high performance range, contact us for more details. Bearing: Sleeve/Ball Bearing Voltage: 12V Current: 0.16A Power: 1.9W Speed: 5300RPM Air Flow: 11.06CFM Air Pressure: 2.67mmH2O Noise: 30.15dB(A) Weight: 20g Frame and Impeller: Thermel Plastic, UL 94V-0 Lead Wires: UL Type ( + ) : Red ( - ) : Black Operation Temperature: -10oC~70oC(+14 ~+167 degree F) 35%~ 85%RH Storage Temperature: -40oC~80oC 35% ~85%RH Up to 50000hrs life expectancy(Ball Bearing) Special Funtion: Temp Control; Auto Start; Alarm; LED; PWM Control Anti-corrosive and moisture proof structure, reinforced plastic or customize design. Our DC/AC Fan are available at high performance range, contact us for more details. Thank you for taking the time to go through our business profile. If there are any question, inquiry or comments, please feel free to contact us.