large humidifiers for home large room whole house top fill 2.1gal/8l , 500 sq.ft. quiet cool mist ultrasonic humidifiers runs up to 48 hours, auto shut-off and easy to clean lacidoll lacidoll 2.1 gal/ 8 l top fill whole-house humidifiers for large room, quiet cool mist ultrasonic humidifiers for bedroom runs up to 48 hours, auto shut-off and easy to clean