Keep your Levoit humidifier running efficiently and hygienically with these genuine replacement filters. Each pack contains 10 filters, giving you months of reliable, healthier humidification right out of the box. Works with the following: Levoit ultrasonic humidifier series, Classic 160, Dual 200S, Dual 150, Classic 300, Classic 300S, OasisMist 450S, LV600S, OasisMist 600SSuperior 6000S.