The Contractor's series of ventilation products is the latest addition to Air Systems' ventilation product group. Known for product quality and performance, Air Systems offers a rugged portable polyethylene fan line designed to accommodate a variety of applications as well as demanding job site conditions at an economical price. This kit includes both the AC Axial Fan (Model No. CVF-8EXP) and the polyethylene canister with 15' or 25' of 8 inch diameter ducting. The Explosion Proof version also includes a continuous wire connecting inside the ducting and grounding lugs on the canister and fan to ensure a 100% intrinsically safe system.