Filter King Merv 8 20x35x2 4-Pack Air Filter actual size is 19.5x34.5x1.75. Our 20x35x2 Furnace Filters are designed to last up to 90 days. These pleated 2-inch air filters are ideal for maintaining the efficiency of your heating and cooling systems. Make sure you measure your filter. The actual size of this pleated Merv 8 filter is 19-1/2 x 34-1/2 x 1-3/4