The Signature™ series is designed for mid to large homes where families, pets, and active daily activities will push a central vacuum system day in and day out. The Signature™ series boasts a cooling intake muffler that circulates fresh air during operation, allowing the motor to stay cool for longer, and helps with quiet operation. A 3 pack of Allergen bags are included with all Signature™ models. The Signature CLS-750 is Cana-Vac's condo central vacuum. It is a smaller unit to fit into smaller spaces, but boasts the same power. The CLS-750 must be run with Allergen bags at all times.