Owner's Manual TheDuovac Air 10 Central Vacuum System is a compact model that is up to 5 times stronger than a portable vacuum. This high-performance system traps 97.5% of microscopic particles as small as 0.1 microns, including allergens, bacteria, and moisture for superior air quality. The Air 10 is a Hybrid Unit that can be used with or without a bag. When used with a filtration bag it employs double filtration for unmatched air quality and prevents contact with dust, dirt, and other debris. This unit also features a low noise level, an LED status indicator on the unit, soft start/stop motor, and a utility valve. 651 Air Watts, 116.8 CFM, 141 Waterlift For Homes Up To 6,500 Sq Ft Hybrid Unit: Can Be Used Bagged or Bagless Using A Filtration Bag Will Execute a Double Filtration for Unmatched Air Quality LED Status Instructions Integrated on Power Unit Extremely Low Noise Level: 55dB Utility Valve Included Extremely Powerful Motor Compact and Easy To Install Ergonomic Handles with Integrated Latches 25 Year Warranty