Nordic Pure 20x20x2 MERV 14 Pleated AC Furnace Air Filters Plus Carbon, Box of 3 Actual Size of Carbon Air Filter: 19 1/2 by 19 1/2 by 1-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