The sleek design of these fiber not only complements your air purifier but also ensures optimal airflow. The sturdy construction durability, making it a ideal solution for maintaining fresh indoor ideal for daily use, these are easy to install and replace, ensuring maintenance. Features -Color:Black -Material:Activated fiber cotton -Size:43.00X36.00X0.50cm/16.90X14.15X0.20in -Advanced material: constructed with advanced fiber material, these offer exceptional absorption of pollutants -Precision engineering: carefully topnotch performance, ensuring your air purifier works at its - filtration: effectively eliminates , , and unpleasant odors, contributing to a healthier indoor atmosphere -Comprehensive system: incorporates a comprehensive multilayer filtration system to the air quality -Wide application: ideal for use in a variety of indoor environments, including homes and offices, providing flexibility and convenience Package list: 4 pcs x 4pcs x Air Purifier Replacement Filter