Vertex factory built Air 4 with Gast 1023 rotary vane,10 cfm open flow 8.8 cfm @ 10 psi.115 volt with GFCI. Stainless steel valves and an oversize 290 cfm cooling fan included. 24 x 24 inch mounting pad included.This is a demo unit that was purchased new in 2005 and has never been outside our showroom. Has approx 5 hours on it. Comes with full factory warranty and 4 new
Vertex CoActive airststions. Can power up to 6 diffusers.