Needs some modification by folding front flap over to fit in chamber. My mother was able to attach the bag, although it took longer than expected due to the slightly odd fit. Allergen protection was a must in our household as some family members suffer from asthma. PRO TIP (per PBS News Hour): To reduce the amount of particles released into the air while vacuuming, turn on all fans and open doors and windows to increase airflow and circulation = DO NOT vacuum in a closed room/room with no windows open or fans on!