coolingfan1
https://www.cooling-fan.com/products/dfx5020-wide-mouthed-dc-blower-fan.html
Description of DFX5020 blower fan
Frame: PBT OF UL 94V-0
Impeller: PBT OF UL 94V-0
Bearing Type: Sleeve Bearing & Ball Bearing& Hydro Bearing
Lead Wires: UL Type or Equivalent ( + ) : Red ( - ) : Black
Motor Protection: Reverse Polarity Protected; Automatic Restart
Operating Temperature and Humidity: -10℃~70℃, 5%~90%RH
Storage Temperature and Humidity: -40℃~80℃, 5%~95%RH