Hi Vapor, et al,

I had a look at the Delta web site and was literally blown away by the GFB series of counter rotating fans.

The 120 x 120 x 76.2mm @ 12V is the quietest @ 55.5dB pushing a whopping 183.92 CFM with a maximum pressure of 0.413 inches H2O.

In the Radiator Box application (2 x Swiftech MCR220-QP Res Radiators in series), imagine 4 of these monsters going flat out. The obvious plus side is that it would provide an absolute maximum Delta drop in temperature for my PC installation. The down side is at least:

1. My wife would divorce me - I do not want that.
2. There is no agent for Delta in Australia.
3. The cost of 4 of these fans plus shipping would be very significant, relative to the locally available other brands.
4. I can get the Zalman ZM-F3 black 120mm fans for just over AU$10 each.

So, this falls into the - Nice to dream about category.

Thank you again for your speedy and rapid response. I, as well as all the other people looking on, really appreciate it.

Best wishes,

David