We humidifier filter, made of natural fabric, multi-layer mesh surface to maximize the output of humidifier moisture, but also better filter Limescale, the upgraded material makes the filter more stable and filtering, can be used for a longer time. Including for Relion WF813 RCM-832 RCM-832N,for Pro Care PCWF813 PCWF-813 PCCM-832N PCCM- 840,for Equate EQ-2119-UL,for Sesame Street SH100 & SH200,also compatible with for Duracraft / Robitussin humidifier models DH-830, DH-832, AC-813, ACR-832, D13-C, HC-832, etc. Easy Installation,Remove the old filter cartridge in your humidifier, put this humidifiers filters in its place and adjust it well. Normal use 1-3 months need to be replaced with distilled water or cold water to fill the tank, not hot water. Color: white Material: wood pulp paper Package Contents: 10 x 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. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. 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 make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!