Allergen Reduction Pleated Filter Nominal Filter Size 20x20x1 Nominal Height 20 In. Nominal Width 20 In. Nominal Depth 1 In. MERV 12 Frame Type Moisture Resistant Die Cut Chipboard Nominal Pleat 60 Percent High Initial Resistance 0.25 In.WC Final Recommended Resistance 1.0 In.WC Max Velocity 500 fpm Media Area 5.1 sq. ft. Max Temp 180 Degrees F Pleats per Linear Feet 15 Standards UL 900 Classified Actual Height 19-1/2 In. Actual Width 19-1/2 In. Actual Depth 3/4 In.