254*89mm radiator cooling fan 25489 for automobile cooling system 1. frame size: 254X89mm 2. bearing system type: two ball bearing 3.frame:Aluminum 4.impeller:thermoplastic PBT UL 94V-0 5. rated voltage: 12V/24V/48V 6. rated speed: 1000/2000/2500/3500/4000RPM 7. maxiam air ...