Case of 8 Delta Electronics - EFB1548XHG - DC48V 1.65A  Brushless Axial Cooling Fan
Features:
150mm x 172mm x 50mm,  (5.9" x 5.7" X 2")
  • Operating voltage 48 VDC (24 to 60 VDC)
  • Operating Temperature -10C to +70C
  • Ball Bearing Permanently Lubricated
  • Die Cast Aluminum Housing 
  • Impeller Thermoplastic 
  • Air Flow 415 CFM (11.75 M3/min) 
  • Solid State Brushless DC Motor
  • Tachometer - Open Collector 28V Max 
  • 2 Pulse/Rev.
  • Tachometer Output 5 mA VCE 0.5V Max.
  • Noise Level 74.5 dBa
  • Lead Wires : - UL 1007 AWG #24 OR Equivalent
  • Red Wire Positive (+)Black Wire Negative (-)
  • UL Certified, RoHS, 
EFB Series fans are low air resistant fans featuring over 25 mm thickness for a 3-blade design. This standard DC axial fan has a maintenance-free ball bearing system and plastic impeller and frame.