AO Smith FC200E1003 Media Air Filter, Charged, For Use With: F100 and F200 Series Media Air Cleaners, MERV: 13, 0.28 Inch WC Static Psure Drop at 500 fpm, - 40 to 140 deg F, 16 Inch L x 20 Inch W • High filtration efficiency • Low psure drop • Easy to install • Long life • Pleated media filter for greater media capacity Standard/Approvals: UL Listed