Nar these where huge 120mm black things with no guards on (Back before H&S went mad...I mean come on who in the right mind puts their finger into a 5k fan).
$20 from Vibrant, tempted to grab a couple actually. Thanks for the link
I think I remember the fans you're talking about. I had a large Compaq DB cluster box (where two servers were combined with attached SCSI storage) that had big black metal fans inside.
I just picked up some more of these Deltas. 240cfm for only ~60dB.
http://www.newegg.com/Product/Product.aspx?Item=N82E16835213001