Quattro Cleaning Power 

Efficient suction system for any kind of floor 
The suction system with its four special features guarantees first-class cleaning performance. 1. Sweeping side brushes trap coarse dirt in the area under the appliance. 2. A roller brush then reliably catches this dirt and transports it to the front suction opening. 3. The rear suction opening ensures that fine dirt is removed thoroughly. 4. Thanks to a powerful fan, the dirt lands securely in the appliance’s dust box. 
Images serve as examples to illustrate the product benefit. Actual feature may vary per model.