Feature●REPLACE EVERY SIX WEEKS, WATCH FOR DISCOLORATION: The Canopy Bedside Humidifier Filter will change to a brownish color, this means the filter is working! Canopy recommends replacing your filter every six weeks.●PAPER BASED FILTER, MADE WITH WOOD PULP: The Canopy Bedside Humidifier Filter is engineered with unique wood pulp, unlike traditional synthetic filters.●COMPATIBLE WITH CANOPY BEDSIDE HUMIDIFIER: This 4 pack of replacement filters is compatible with Canopy Bedside Humidifiers●4 PACK OF REPLACEMENT FILTERS: This pack contains 4 replacement filters for the Canopy Bedside HumidifierDescription