High Capacity Pleated Filter Nominal Filter Size 20x24x1 Nominal Height 20 In. Nominal Width 24 In. Nominal Depth 1 In. MERV 11 Frame Type Moisture Resistant Die Cut Chipboard Nominal Pleat 0.6 High Velocity 500 fpm High Initial Resistance 0.38 In.WC Final Recommended Resistance 1.0 In.WC Max Velocity 500 fpm Media Area 5.4 sq. ft. Max Temp 180 Degrees F Pleats per Linear Feet 13 Standards UL 900 Classified Actual Height 19-3/4 In. Actual Width 23-3/4 In.