Constructed of an all metal housing, aluminum chassis and heavy-duty steel hood assembly, the Ironside may be the most durable vacuum ever made. The all metal construction stands up to the most rigorous demands of the cleaning industry. No other vacuum provides this combination of durability and suction power. At 145 CFM, the Ironside makes heavy-duty suction look effortless. It will pick up everything! Great for dog hairall of those things in home or office environment that get left behind by ordinary vacuums. The Ironside sets the standards of performance for commercial vacuum durability.