• Refill filter replacement sachet with activated carbon compatible with Greensaver keeper, bluapple produce saver and other crisper Inserts
• Each sachet contains activated carbon and potassium permanganate
• While activated carbon removes any unfavorable odor from food, potassium permanganate can effectively absorb the Ethylene gas from the produce to extend the freshness
• Suggest replacing the filter every 2-3 months the most to keep the produce fresh and last longer
• Size 3.5" x 2.4". Quality meets or exceeds the leading national brand. 36 Filters included.