Oh and one more thing, if your running a table saw, a shop vac ain't gonna do it. I ran my more powerful older Ridgid on my compact Dewalt DW745 and later my Sawstop. It was, on both machines, next to useless. It just does t have the volume capabilities of a standard dc unit. A dust collector is going to do the job because of its power and the CFM they can move, and can be gotten pretty cheaply on Grizzly.com or Harbor Freight. And yes, the Harbor Freight dc unit though cheap isn't too bad.