High Capacity Pleated Filter Nominal Filter Size 25x29x4 Nominal Height 25 In. Nominal Width 29 In. Nominal Depth 4 In. MERV 8 Frame Type Moisture Resistant Die Cut Chipboard Nominal Pleat 0.4 High Velocity 625 fpm High Initial Resistance 0.29 In.WC Final Recommended Resistance 1.0 In.WC Max Velocity 625 fpm Media Area 28.4 sq. ft. Max Temp 180 Degrees F Pleats per Linear Feet 12 Standards UL 900 Classified Actual Height 24-3/8 In. Actual Width 28-3/8 In.