Check the listing for details. Filter Refills for Composters 83-NORPRO and 93-NORPRO. Condition: New. Listed at 14.99 USD. Keep your Norpro Compost Crock smelling fresh and clean with the Norpro Compost Filter Refills! Its recommended to replace the filter in your Norpro Ceramic Compost Keeper every 6-months, and with this refill replacement set, youll be prepared when its time to replace. This set includes two charcoal replacement filters that fit snuggly inside your Norpro Compost Crocks to help absorb odors from the contents in your compost bin. These replacement filters are compatible with Norpro Ceramic Composts Keeper models 83-NORPRO & 93-NORPRO and will keep your kitchen smelling fresh! Norpro Compost Keeper Filter Refills Features: Includes 2 replacement filters Charcoal filters absorb odors from compost keeper Recommended to replace filter every 6 months Compatible with Norpro Ceramic Compost Keeper models 83-NORPRO & 93-NORPRO only Diameter: 5.5" Looking for more Norpro? Click here!