Those are the stuff......i couldnt see a price at that link........
Here is where I get mine. By far the best intake screen option. It doesnt show it but they thread into a 1.5" bulkhead, can handle 4800 gph apiece, are low profile(only stick out 1/2"), and critters dont get stuck against their will.
http://www.spacare.com/index.asp?Pag...OD&ProdID=3796
edit...didnt notice your 2" bulkheads. I feed my hammerheads with 2-1.5" apiece. Not sure if this guy carries 2" ers,l although i have modded them to fit 2", and as little as 1" in the past. I think chaotics link has the 2" ers.