This 12″ metal blower system created by Allegro with ducting built into a heavy duty polyester bag for an all-in-one unit for ease of operation. Designed with zippered ends that allow blower use without removing blower from the bag. Zipper openings allow for plug/cord inlet and outlet. Easy to carry and store. Polypropylene seven-blade fan, steel/powder coated housing and grill, carry handle with molded-in 2 speed switch. Ducting: Single-Ply lightweight vinyl/polyester PVC coated. Yellow with black wear-strip and integrated nylon attachment strap on one end. Certified to CSA Standard C22.2 No 113.