Your compost keeper came with one, and it’s highly unlikely you would need to replace this more than once every two years if you routinely rinse your filter.
Compost keeper filter refills for #83, #93, #93R and #93EB Norpro Brand Compost Keepers. That means it works for 1 Gallon Compost Keepers and for the Floral 3 Qt Compost Keeper available at Pantry Paratus.
Charcoal free – you can rinse your filters, but do not submerge in water.
You can also get biodegradable bag inserts for your compost keeper to make cleanup simple!