High Capacity Pleated Filter Nominal Filter Size 18x22x2 Nominal Height 18 In. Nominal Width 22 In. Nominal Depth 2 In. MERV 8 Frame Type Moisture Resistant Die Cut Chipboard Nominal Pleat 0.4 High Velocity 500 fpm High Initial Resistance 0.30 In.WC Final Recommended Resistance 1.0 In.WC Max Velocity 500 fpm Media Area 12.4 sq. ft. Max Temp 180 Degrees F Pleats per Linear Feet 15 Standards UL 900 Classified Actual Height 17-1/2 In. Actual Width 21-1/2 In.