Tested and Works Very Clean. The Vicks Filter Free Humidifier is a tabletop model with a 1.2 gallon tank capacity, providing cool mist humidification for a healthy indoor environment. This white humidifier from Vicks features adjustable humidity control and quiet operation, making it suitable for whole house, personal, or whole room use. With its convenient design and effective humidification method, the Vicks V4600 model is a reliable choice for maintaining optimal indoor air quality.