Welcome to our shop! Protect your health with cleaner air using our aluminum electrostatic air filter. It features an 8-layer dense mesh structure and uses electrostatic capture technology to efficiently trap and filter pollen, pet hair, dust, and other small particles. With a MERV 8 filtration rating, it ensures fresher, healthier air for your home, making it ideal for families with pets, young children, or those with special health needs. This filter is sustainable and reusable. Unlike disposable fiber filters, it is washable and reusable, lasting longer without frequent replacements to help reduce waste. Its mesh structure optimizes airflow without affecting your device's performance, saving on energy costs. Installation is easy. The 20x25x4 inch static furnace filter has an actual precise size of 19.37 x 24.37 x 3.58 inches (492 x 619 x 91 mm). Installation is quick and tool-free, and it is compatible with HVAC systems, central air, and furnaces. You will receive one filter. Simply slide it into place to enjoy cleaner air right away. Cleaning and maintenance are simple. To maintain your filter, rinse it with water and cleaner, let it dry naturally, and reinstall it. You can also vacuum it regularly. We recommend a deep cleaning every 2-3 months, but avoid using a high-pressure washer to prevent damage. It offers long-term value. Made from high-quality materials, the metal frame and mesh structure are durable, resistant to wear and corrosion, and maintain excellent performance even after multiple washes. It is the ideal, cost-effective choice for both commercial and residential spaces, saving you money in the long run. Satisfaction: Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactory after-sales service.