I got the drier as part of a package deal they offer. Got mine in late 2012, don't know what the cost is now. I dealt with Megan on that. The drier is rated for 50 cfm, but the supplied external filter (they said) was rated at 35. It had 1/2" openings so I got a larger filter with 3/4" openings at Grainger. The last thing I wanted to do was choke it down coming straight out of the drier.

We use extra fine grade blasting sand for outside.