Wick filters designed to fit select Vornado evaporative humidifiers. Antimicrobial treated. The filter must have the correct height width thickness and material for maximum performance. Vornado wicks are developed from the highest quality materials that work to absorb the maximum amount of water while filtering the circulating air. No cleaning required disposable design. Replace every 4 to 8 weeks depending on use. Compatible with Models Evap1 Evap2 Evap3 and Evap40. null -