Hoovers Hush central vacuum power unit is the standard of quality. All steel construction with Powdercoated finish. Commercial motor provides its user with over 136 inches Of suction lift. Self cleaning filter has a DuPont Teflon coating for easy care. May be used with or without a bag. Giant bag style CV is Micro Filtration and keeps unit clean for years. 5 year motor warranty. The Hush motor has a silencing system in its motor compartment and on its exhaust air system. Quieter sound levels for installation in areas of the home where unit noise is undesired. No LONGER AVAILABLE> SOLD OUT!