Set of 2 Replacement Charcoal Filters, for Oggi Compost Pails # 7320, 5427, 5448 and 7700 * Charcoal filter helps absorb odors for up to 2-3-month * Replace every 2-3-month as needed * Simple to use * Made specifically to fit for Oggi Compost Pails # 7320, 5427, 5448 and 7700