Premium Quality Materials: This ceiling fan air filter is expertly crafted using activated coconut charcoal and natural coconut shell, known for their large porosity and high specific surface area. These features optimize the absorption of various odors and particles thus cleansing the air you breathe in your home, office, or workspace. Each purchase comes with three high-quality filters, ensuring reliable and safe air purification. Simply peel off the back of the tape and stick it to the appropriate blades. Rest assured that these filters won't easily come off but will remain securely adhered to your fan. Make sure to clean and dry the fan blades before installation to maximize the adhesive bond. Effective Air Filtration: Our innovative ceiling fan filter operates by capturing harmful particles such as dust, pollen, pet dander, and smoke in your environment. The fan's rotation on the blades creates an airflow pressure difference, aiding the filter's function to improve the air quality in your surroundings. Maintaining Optimal Performance: To take full advantage of the ceiling fan filter's advantage, we recommend inspecting and changing the filter every 30 to 45 days. However, this may differ depending on your home's particulate levels. Regular replacements ensure the filter's continued efficiency and your area's cleanliness. Please note:There is a slight color difference or difference in kind, it does not affect the use, please do not mind, thank you! Type:B Colour:Black Material:cotton Size:About 250x90x5mm Package Contents: 3 * ceiling fan 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.