Nordic Pure 12x18x1M8+C-6 MERV 8 Plus Carbon AC Furnace Air Filters, Qty 6 Actual size of carbon air filter: 11 1/2 by 17 1/2 by 3/4 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