US Home Filter SC40-16X25X1 MERV 8 Pleated Air Filter (12 Pack), 16" x 25" x 1" Actual size: 15-1/2" x 24-1/2" x 3/4" Merv 8 tested under ashram 52.2-2007 standards Ideal for normal air filtration and those with mild allergies Moisture resistant, heavy-duty frame Galvanized expanded metal backing