High Capacity Pleated Filter Nominal Filter Size 25x25x1 Nominal Height 25 In. Nominal Width 25 In. Nominal Depth 1 In. MERV 8 Frame Type Moisture Resistant Die Cut Chipboard Nominal Pleat 0.4 High Velocity 500 fpm High Initial Resistance 0.24 In.WC Final Recommended Resistance 1.0 In.WC Max Velocity 500 fpm Media Area 8.3 sq. ft. Max Temp 180 Degrees F Pleats per Linear Feet 15 Standards UL 900 Classified Actual Height 24-1/2 In. Actual Width 24-1/2 In. Actual Depth 3/4 In.