Compatible Models - Our HFT600 humidifier filter for HEV615 series and HEV620 series humidifier filter. Replacement for filter type T and HFT600 filter Super Craftsmanship - Our HFT600 humidifier filter with hot glue strips and dense construction, are made of high quality reinforced mesh paper, and are rich in high density hygroscopic fibers that prevent collapsing or sagging due to time or moisture. In addition, the use of advanced low-density structure technology, with higher filtration accuracy, effectively reduce the accumulation of dirt and remove impurities such as particles, helping to reduce or even eliminate potential health risks Pack - Package includes 6 x HFT600 humidifier filters. Warm Tips: For results, please fill the humidifier tank with distilled water. Excessive use of hard water will degrade filters and cause them to turn yellow prematurely. We recommend you to replace the humidifier filter every 1-2 months for optimal performance (depending upon your usage) Please note: Slight color difference or difference in kind,does not affect the use, please do not mind, thank you! Colour:White Material:composite materials Package Contents: 6 x Humidifier Filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.