Although this Backpack Vacuum weighs in at less than 11 pounds, it’s far from lightweight in the power department. With 144 CFM of airflow, and 99 inches of static lift, this Backpack Vacuum packs a serious wallop. A strategically placed exhaust port directs exiting warm air up and away from the operator. And, in spite of all that power, the Backpack Vacuum is as easy on the ears as it is on the back. Its category leading 62 dB A and lower-pitched voice enables operators to clean during business hours.