figured I could just call up Summit or Jeg's and order what I wanted. However, the only ones available are from Flex-A-Lite and Derale (they actually look like the same part) and have six equally spaced blades. I had always heard that 5- or 7-blade fans with non-equally-spaced blades would be quieter and less prone to harmonics. Is this really a big deal?
thanks,
nate