About This UNIVERSAL COMPATIBILITY: 12x24x12 replacement rigid cell air filters wit header enhance HVAC system efficiency and support a healthy lifestyle (actual size: 9.75' x 21.75' x 11.38') MERV 13 PERFORMANCE: Synthetic media protects businesses from bacteria and more while trapping 98% of dust particles without impacting air flow making them perfect in commercial settings (like variable air volume systems) LASTING FILTRATION: Ultra fine media with an extended surface area collects more contaminants, combats humidity, eliminates fiber shredding, and lasts 3x longer than fiberglass models (replace every 90 days for best performance) SUPERIOR CONSTRUCTION: Industrial grade galvanized steel frames with wire mesh backings ensure rigidity by withstanding air flow fluctuations MADE IN THE USA: Built with industrial-grade, recyclable materials and proudly manufactured 100% in the United States for dependable indoor air quality you can trust Overview Brand : Filterbuy Material : Alloy Steel, Aluminum, Polypropylene Product Dimensions : 21.75'L x 9.75'W x 11.38'Th MERV Rating : 13 Compatible Devices : Air Cleaner, Air Conditioner, Furnace, HVAC System, Heat Pump Item Weight : 36 Pounds Max Temperature : 200 Degrees Fahrenheit UPC : 717267246989 Air Filter Construction : Rigid Cell Number of Items : 1