Actual Size of Carbon Air Filter: 19 1/2 x 19 1/2 x 3 5/8;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

• Nordic Pure 20x20x4M13+C-1 MERV 13 Plus Carbon AC Furnace Air Filters, Qty-1

Nordic Pure 20x20x4M13+C-1 MERV 13 Plus Carbon AC Furnace Air Filters, Qty-1Nordic Pure