20x25x2, Percisionaire 40ldp Merv 8, 80055.022025, Pack12 20 x 25 x 2 in. Pre-Pleat 40 Air Filter. 100&#37; Synthetic. High Dust Holding Capacity &#38; Low Pressure Drop. 2 Piece Heavy Duty Die Cut Frame. Expanded Metal Backing &#38; Diagonal Grid Supports For Maximum Strength.