: healthy air, advanced humidification filter, bacteria and scale can be adsorbed A high quality air filter that can replace the filter of your Air humidifier. Go back to the fresh air and breathe again! FOR philips Air humidifier filters HU3915/HU3916/HU3918/HU2716/HU2718/FY3446 models Replacement accessories Maintenance:The filter should be replaced 6-10 months. But the replacing period also depends on how often you use your filter and around the environment. Material:filter paper colour:Blue Package Contents: 1 x filters Only the above package content, other products are not included. Note: Light shooting 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.Product Notes: Please allow a little manual errors.Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please confirm acceptance before ordering. About Shipping: Please ensure your shipping informations are correct to avoid delivery issues. All orders are shipped within 3 days after payment. Delivery usually takes 8–12 days, The specific delivery time is depend on circumstances. If you have any questions during your purchase, feel free to contact us. We will respond you within 24 hours.