I believe the ratings for this unit are min ACFM 19 and max ACFM 35. I don't know the "real" specs, and this guess is based off of the new model QT-10. Regardless, this puppy is more than I'll ever need!!
I'm in late on this one -- as usual -- but that looks similar to the compressors we used at Santini... we had three that could have 2-5 200-300 foot hoses attached at any time running nail guns all over the yard (approximately 1-2 city blocks square). Never had any complaints about lack of air.