The VacuMaid SR36 features a powerful 5.7” 2-stage flowthru motor and sealed paper bag filtration. This SR36 power unit may be small, but it is a powerful vacuum and perfect for smaller homes, condos, and apartments. The SR36 is one of VacuMaid's sealed paper bag units and incorporates a two layer disposable paper bag for superior filtration. The bag has an inner liner which adds longer life, as well as more strength and resistance to bursting. This liner also serves as an electrostatic barrier. These paper bags are also inexpensive and easy to throw away, making vacuum maintenance easy.This SR36 power unit is constructed from rolled galvannealed steel and powder coated for a tough, corrosion-resistant lifetime of use. As with all of our VacuMaid central vacuum systems, using the SR36 can help decrease asthma and allergy symptoms by removing dust and allergens from your living areas. Vacuuming with these vacuums provides a powerful, efficient cleaning job that will rid your home of these allergy-triggering irritants.