This Bissell 12-pound backpack vacuum has a 10-quart capacity and can be used to clean large areas without having to stop and change bags. Bissell has injected over 170 inches of square foam to help deaden the noise level output. Overall, it puts off 65 decibels of sound, which is quite enough to use in the workplace, during normal working hours. The ingenious tapered design allows consistent airflow even when the bag is heavy, or full. The 4-level filtration system reduces dust and dirt from being exhausted back into the room. Micro lined paper filter lasts longer and stays stronger under heavy use.