This Vent a Hood liner is the only liner to offer the Magic Lung Premium blower. The Magic Lung blower uses centrifugal force to remove heat, grease, smoke and odors from your cooking exhaust. This one piece Stainless Steel hood insert includes the blowers, Led lighting and switches. Just insert and connect the power. Easy to install, super quiet 1200 cfm blower performs by efficiently removing over 98% of the grease created during cooking. Made in the USA.