Crucial Air 7320 Compost Filter HIGH QUALITY AIR FILTER that can replace your OGGI Compost Pail Charcoal Carbon Filter. Get back to having a better working and smelling compost pail! HEALTHIER LIFESTYLE! No one wants breathe dirty air from their compost pail and if you don't clean your air filter that will be exactly what you'll be doing! Replacing your filter will help clean your compost pail's air and allow for a healthier lifestyle! This filter helps keep our household dust, pollen and mold spores. This filter fits the following compost pail models: 7320, 5427, 5448 & 7700. EXTREMELY DURABLE! No one wants to worry about replacing a filter because it broke when they tried to install it, or maybe it ripped somehow. We made sure to make these filters as durable as we can so they'll last as long as they can! We recommend you change your filters every 2-3 months depending on usage. EASY TO INSTALL so you can get back to a better working and smelling compost pail! Simply remove your old filter and put this brand new one in it's place! GUARANTEED SATISFACTION because of a 30 day full money bank guarantee and a trusted Think Crucial warranty. We are so confident in our products that we have no problem giving you every penny back if you're unhappy with your purchase. You won't see promises like that from big box brands!