Keep your fridge fresher longer with Frigidaire PureAir Air Filter AF-2, which uses carbon technology to absorb undesirable smells and clear the air. With better performance than baking soda, this filter is more powerful and effective at capturing and keeping odors away. It can maintain freshness for up to 6 months, which saves you time on monthly replacements and keeps the food in your fridge fresher longer. Frigidaire PureAir Air Filter– the smarter, fresh choice.