Single 2-stage 5.7" by-pass motor, 120 volts, Tru-Seal 8 gallon HEPA Bag, 62 dBA, up to 8000 sq ft. Assembled in USA Silent Master units boast high levels of suction and airflow simultaneously which sustains powerful cleaning throughout the system. One of the easiest central vacuum systems to install, service and maintain. SilentMaster Highlights Ultra Quiet Sound Suppression Excellent Power and Longevity True 8-Gallon Capacity Less Filtration Maintenance More Sustained Suction Utility Valve Hose Connection Dimensions: 37" H x 14" Diameter Maximized Cleaning with industry leading filtration Models ranging from 495 to 900 air watts provide deep cleaning power for any home. SilentMaster's Tru-Seal Microfiltration features a closed bag, 5-ply microfilter that connects to both intakes and the utility valve and holds 8 gallons of debris. Certified Refurbished All certified refurbished vacuums from All Things Clean are guaranteed to be spotless with new or slightly used replacement parts. Each unit is professionally restored by certified MD technicians, thoroughly disinfected inside, and fitted with replacement parts when needed. We always include a fresh bag and new filters, so you can enjoy a vacuum that looks, feels, and performs like new.