Nordic Pure 20x24x4M8+C-2 MERV 8 Plus Carbon AC Furnace Air Filters, Qty 2 Actual size of carbon air filter: 19 3/8 by 23 3/8 by 3 5/8 Odor absorbing activated carbon One convenient air filter-MERV 8 pleated plus activated carbon A simple solution for controlling both odors and dust particles Nordic Pure Manufacturer Direct Since 1960 - Made in the USA