Humidifier Filter For Honeywell HFT600 Series And HEV-600 Series Filters 1. Material: wood pulp paper 2. Weaving method: twill 3. Diameter of single filament: about 100 mm 4. Mesh: 20 (meshinch) 5. Radial breaking strength: not more than 50 (Ncm) 6. Performance: waterproof 7. Applicable models: for Honeywell HFT600 series and HEV-600 series humidifiers 8. Weight: about 65 g 9. Size: about 20 x 16.5 x 2.5 cm Features: 1. Comfortable to use, the blue pre-filter layer can effectively filter and help to extend the service life of the filter to a greater extent 2. Using professional environmental protection imported blue filter paper with diamond-shaped grid structure to improve the machine's moisture removal performance 3. Easy to install and replace, upgraded blue mesh appearance improves product performance and further ensures product cleanliness 4. The filter captures minerals from hard water and blocks white dust, providing you with multiple protections and home health care, allowing your family to live in a fresh indoor environment 5. It is recommended to change the filter every 1-2 months, changing the filter regularly helps to improve breathing comfort and keep your home feeling moist and warm