Nordic Pure 20x20x5L1M14+C-1 Lennox X0585 Replacement MERV 14 Plus Carbon AC Furnace Air Filters, Qty-1 Actual Size of Carbon Air Filter: 19 5/8x 19 7/8 by 4 3/8-Inch Odor absorbing activated carbon One convenient air filter - MERV 12 pleated plus activated carbon A simple solution for controlling both odors and dust particles Nordic Pure Manufacturer Direct Since 1960-Made in the USA