REPLACEMENT AIR FILTER: Our HEPA air filter replacement is specifically designed for the Alen T500 air purifier. Insert our air purifier filters into the T500 Tower Air Purifier and watch it clean 500 sq. ft. of air every 30 minutes. EFFECTIVE AIR PURIFIER FILTER: This Alen air purifier filter replacement is fantastic for better air in your home. The filter replacement features a layer that captures 99.9% of airborne particles down to 0.1 micron. These filters are great for capturing allergens, pollen, dust, dander, and fur. GENUINE ALEN REPLACEMENT FILTERS: This high-quality air filter replacement scrubs the air of allergens, pollen, dust, dander, and pet fur that can be an unwanted nuisance. Experience clean air and breathe easy again! LONG-LASTING PURE AIR FILTER: Our TF60 replacement air filters for air purifiers is manufactured to be long-lasting. Using our air purifier replacement filter, you'll get up to 12 months of pure air production in your home, apartment, or office space. TRANSFORM YOUR INDOOR AIR WITH ALEN: Here at Alen, we are dedicated to improving the quality of people’s lives by researching and developing cleverly designed and expertly crafted air purifying solutions that will utterly transform the air quality inside of virtually any indoor environment.