2 Pack X6669 MERV 16 21x26x4 Air Filter, High Efficiency Replacement for Lennox X6667,X8345,X6669 Filter Compatible with PCO-20C PureAir,Fit 21x26x4 Furnace Filter

Perfect CompatibilityThe X6669 MERV 16 21x26x4 filter replacement Lennox X6669, X6667, X8345, Compatible with Healthy Climate 21x26x4 PCO-20C. Housing Dimensions: 21x26x4 inches,actual filter dimensions: 20.94 x 25.67 x 3.7 inches (slightly smaller for a secure fit)Please measure the dimensions of your old filter or the filter housing before purchasing to ensure compatibility | MERV 16 Efficient FilteringThe X6669 MERV 16 filter offers a significant performance upgrade over standard MERV 11 and MERV 13 filters, delivering advanced filtration efficiency for improved indoor air conditions. Featuring 99.97% efficiency at 0.3 microns,creating a fresher indoor environment for your home or office | Long-Lasting & Cost-SavingThis package includes 2 X6669 MERV 16 furnace filter replacements. Featuring a high-pleat design, these filters provide a larger filtration surface and enhanced dust-holding capacity, improving air purification efficiency. Each filter lasts up to 12 months depending on your environment, saving you on frequent replacements. X8789 also helps AC and heating systems run efficiently, reducing energy and maintenance costs while providing clean air. | Tool-Free Easy InstallationThe X6669 MERV 16 Filter 21x26x4 is designed for easy installation in minutes. Simply follow the airflow direction and slide it into place. Once installed, youll notice immediate improvements in air quality, creating a fresher and more comfortable environment throughout your home. Perfect for enhancing air purification and indoor comfort | ServiceYour satisfaction is our priority. If you encounter any issues, we promise to resolve them within 12 hours. Should there be any problem with the product, well provide a full replacement or refund