Filterbuy 20x20x6 MERV 14 Header, Rigid Cell Filters HVAC Replacement (2-Pack)

20x20x6 replacement rigid cell air filters with header for your HVAC system (actual size: 17.75" x 17.75" x 5.75") MERV 14 synthetic media protects businesses from bacteria and more while trapping 99% of dust particles without impacting air flow High-quality construction features an ultra-fine (100% US made) design that combats humidity, eliminates fiber shredding, and lasts 3x longer than fiberglass models (replace every 90 days for best performance) Industrial grade galvanized steel frames with wire mesh backings ensure rigidity by withstanding air flow fluctuations Extended surface area collects more contaminants, making them perfect in commercial settings (like variable air volume systems)