?Product Specifications: * Brand:Kolasina * Condition: 100% New ?Perfect Fit: * KFAFK0312LRG Washable Fan Coil Air Filter Fit for Trane EX1000, TWE060D150, FX4DNB043, FXDNF031, FX4DNF037, FX4DNB031, FX4DNB037, FX4DNF043,Payne PF1MNC036, PF1MNC037, PF1MNC042, PF1MNC043, PF1MNC048, PF1MNCO49. ?Advanced Filtration: * Traps dust, pollen, pet dander, smoke, and household odors to improve indoor air quality. ?Actual size: * 21.5" x 19.75" x 0.875". ?Easy installation: * Swap your old filter in minutes! For optimal performance, clean or replace every 6 months (varies by usage). ?You have purchased this product from our shop. We provide 2 years warranty. ?Please ensure that the size of your product is the same before making a purchase.