Could you take a picture of what you currently have? Muffin fans like this: http://www.newegg.com/Product/Product.aspx?Item=9SIA27C3GZ4662 are ubiquitous in electronics. Yours is a monster: that's a 50 watt fan. Probably the most relevant item in the latter chunk of info is 210 total cfm -- that's the cubic feet per minute it flows. I presume that's several fans, some of which are burnt out or failing? Two of these: http://www.amazon.com/dp/B009OWRMZ6 would exceed the flow capacity of the originals. They should also last for something like five years of continuous usage. The Packard frame motor would probably work. Generally you'd rather the replacement have the same or slightly lower max amperage, because that way the power supply/control system wouldn't be straining to run it.
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Muffin fans like this:
http://www.newegg.com/Product/Product.aspx?Item=9SIA27C3GZ4662
are ubiquitous in electronics.
Yours is a monster: that's a 50 watt fan.
Probably the most relevant item in the latter chunk of info is 210 total cfm -- that's the cubic feet per minute it flows. I presume that's several fans, some of which are burnt out or failing?
Two of these: http://www.amazon.com/dp/B009OWRMZ6 would exceed the flow capacity of the originals. They should also last for something like five years of continuous usage.
The Packard frame motor would probably work. Generally you'd rather the replacement have the same or slightly lower max amperage, because that way the power supply/control system wouldn't be straining to run it.