US Home Filter SC60-10X10X1-6 10x10x1 Merv 11 Pleated Air Filter (6-Pack), 10" x 10" x 1" Actual size: 9-1/2 inch x 9-1/2 inch x 3/4 inch Merv 11 tested under ashrae 52.2-2007 standards Ideal for those with moderate allergies Moisture resistant, heavy-duty Frame Galvanized expanded metal backing