These electrostatic air cleaning filters are tailored to meet the needs of users looking for reliable and sturdy air purification . The cotton composition ensures sturdy filtration, capturing microscopic particles and enhancing indoor air quality. ideal for creating a comfortable and allergen-free in any living or working space. Features -Color:Grey -Material:Cotton -Size:21.50X5.30X0.50cm/8.45X2.08X0.20in -Note: There is a difference. -Efficient dust removal: sturdy filter cotton effectively removes dust and other particles, improving indoor air quality -Simple installation: easy to replace, ensuring that your air conditioning system continues to provide air with minimal effort -Enhanced system efficiency: promotes better airflow, helping your air conditioning system run more efficiently and lifespan -Versatile use: compatible with various air conditioner models, suitable for different environments such as homes, offices, and more -sturdy and : washable design reduces the need for frequent replacements, saving you money and making it an sturdy option Package list: 8pcs x air conditioning filters