16x20x1, Percisionaire 40ldp Merv 8, 80055.011620, Pack12 Includes: Box of 12 Filters Flanders Pre Pleat 40 LPD (Low Pressure Drop) MERV 8 Pleated Filter 40% Lower Pressure Drop with the Industries Highest Dust Holding Capacity 100% Synthetic, Non-Woven Proprietary High-Loft Media that Can Be Recycled Flanders Has Led the World in Filter Media Development and the Application of High Efficiency Filtration for Over 60 Years