US Home Filter SC80-16X25X1-6 MERV 13 Pleated Air Filter (Pack of 6), 16" x 25" x 1" Actual Size: 15-1/2" x 24-1/2" x 3/4" MERV 13 tested under ASHRAE 52.2-2007 standards Ideal for those with moderate to severe allergies Moisture resistant, heavy-duty frame Galvanized expanded metal backing