Its actaully 72" long, 24" wide, and 28" deep.
I REALLY wish the depth and width were swapped so it would be 72x28x24... Its a PAIN trying to reach the bottom of the tank, especially since my arm gets this weird rash from the saltwater.
But on the good side, the 24" width fits perfectly in the corner of my living room and doesnt stick out past one of our bedroom doors.
As far as filtering, I've got a 36 gallon sump, Phosban Reactor and a Euro-Reef RS180 (We couldnt get an RS250 beecause it wouldnt fit in the sump/stand). The Euro-reef works like a charm.
Dont hesitate to ask any questions or give comments, I enjoy talking on this thread, which is rarely active.