Colorfil 20x25x1 Odor Removal and Color Changing Pleated AC Furnace Air Filter, MERV 8 (6-Pack)

Replaces standard air conditioning and furnace filters. Helps to capture and neutralize odors in the air without covering them up. Removes dust, dander, and pet hair. Changes color from pink to yellow as it neutralizes gas phase odors. Never worry about when you need to change your furnace and air conditioning filter again.